Question 1

The system cannot be solved by matrix inverse methods. Find a method that could be used and then solve the system.
-

Accepted Answer

A)  x1 = 3t + 2, x2 = t for any real number t 
B)  x1 = 3t + 2 for any real number t, x2 = 0 
C)  x1 = 2t + 6, x2 = t for any real number t 
D)  No Solution 
A)  x1 = 3t + 2, x2 = t for any real number t 
B)  x1 = 3t + 2 for any real number t, x2 = 0 
C)  x1 = 2t + 6, x2 = t for any real number t 
D)  No Solution

Question 2

Solve the problem.
-A trucking firm wants to purchase 10 trucks that will provide exactly 28 tons of additional shipping capacity. A
model A truck holds 2 tons, a model B truck holds 3 tons, and a model C truck holds 5 tons. How many trucks
of each model should the company purchase to provide the additional shipping capacity? Set up a system of
linear equations and solve using Gauss-Jordan elimination. There may be more than one solution.

Accepted Answer

2 model A, 8 model B, and 0 mo

Question 3

Find the values of a, b, c, and d that make the matrix equation true.
-

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 4

Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of
 both lines.
-

Accepted Answer

A)  x = -5; y = 8 
B)  x = 3, y = 7 
C)  x = 5; y = -8 
D)    
A)  x = -5; y = 8 
B)  x = 3, y = 7 
C)  x = 5; y = -8 
D)

Question 5

Provide an appropriate response.
-Use the matrix method on a graphing calculator to solve the system   Carry values to two decimal places.

Accepted Answer

The answer of Provide an appropriate response.
-Use the matrix method...

Question 6

Solve the problem.
-Suppose that the supply and demand equations for a logo sweat shirt in a particular week are eek are   for fo
the demand equation; and d   , for the supply equation. Find the equilibrium price and quantit for the supply equation. Find the equilibrium price and quantiy.

Accepted Answer

Equilibrium price: :

Question 7

Perform the indicated operations given the matrices.
-Let A =   an ad B =   ;; 2A + 3B

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

Perform the indicated operations given the matrices.
-Let A =

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 9

Solve the problem.
-A company makes three chocolate candies: cherry, almond, and raisin. Matrix A gives the number of units of each ingredient in each type of candy in one batch. Matrix B gives the cost of each ingredient (dollars per unit)
From suppliers X and Y. What is the cost of 100 batches from supplier X?

Accepted Answer

A)  $3300 
B)  $6600 
C)  $7800 
D)  $4800 
A)  $3300 
B)  $6600 
C)  $7800 
D)  $4800

Question 10

Solve the system as matrix equations using inverses.
-

Accepted Answer

A)  (5, 1, 4) 
B)  (4, -5, -1) 
C)  (-5, -1, 4) 
D)  (4, -1, -5) 
A)  (5, 1, 4) 
B)  (4, -5, -1) 
C)  (-5, -1, 4) 
D)  (4, -1, -5)

Question 11

Use the given encoding matrix A to solve the problem.
-Use the given message to construct the code matrix by assigning numbers to the letters and symbols. Use the numerical assignment a = 1, b = 2, . . . , z = 26, space = 30, period = 40, and apostrophe = 60.
Message: CALL ME TOMORROW.
Encoding matrix A ==

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 12

Perform the operation, if possible.
-Let A =   an ad B =   . Fi Fnd BA.

Accepted Answer

The answer of Perform the operation, if possible.
-Let A =...

Question 13

Solve the equation for the indicated variable. Assume that the dimensions are such that matrix multiplication and
 addition are possible and that inverses exist when needed.
-Solve for A: AY - A = B

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 14

User row operations to change the matrix to reduced form.
-

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 15

Find the system of equations to model the problem. DO NOT SOLVE THIS SYSTEM.
-There were 35,000 people at a ball game in Atlanta. The day's receipts were $290,000. How many people paid $14 for reserved seats and how many paid $6 for general admission? Let x represent the number of reserved
Seats and y represent the number of general admission seats.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 16

Write the system as a matrix equation of the form AX = B.
-6 8

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 17

Write the linear system corresponding to the reduced augmented matrix.
-

Accepted Answer

A)  x1 = -4, x2 = t + 6, x3 = t for any real number t 
B)  x1 = 4, x2 = t + 6, x3 = 0 
C)  No Solution 
D)  x1 = 4, x2 = -t + 6, x3 = t for any real number t 
A)  x1 = -4, x2 = t + 6, x3 = t for any real number t 
B)  x1 = 4, x2 = t + 6, x3 = 0 
C)  No Solution 
D)  x1 = 4, x2 = -t + 6, x3 = t for any real number t

Question 18

Solve using Gauss-Jordan elimination.
-

Accepted Answer

A)  (-6, 9, 12) 
B)  (6, 4, 9) 
C)  (6, 9, 4) 
D)  No solution 
A)  (-6, 9, 12) 
B)  (6, 4, 9) 
C)  (6, 9, 4) 
D)  No solution

Question 19

Provide an appropriate response.
-Solve the linear system corresponding to the following augmented matrix:

Accepted Answer

The answer of Provide an appropriate response.
-Solve the linear system...

Question 20

The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the
 system.
-

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

The system cannot be solved by matrix inverse methods. Find a method that could be used and then solve the system. -

Find the values of a, b, c, and d that make the matrix equation true. -

Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines. -

Provide an appropriate response. -Use the matrix method on a graphing calculator to solve the system Carry values to two decimal places.

Solve the problem. -Suppose that the supply and demand equations for a logo sweat shirt in a particular week are eek are for fo the demand equation; and d , for the supply equation. Find the equilibrium price and quantit for the supply equation. Find the equilibrium price and quantiy.

Perform the indicated operations given the matrices. -Let A = an ad B = ;; 2A + 3B

Perform the indicated operations given the matrices. -Let A =

Solve the system as matrix equations using inverses. -

Perform the operation, if possible. -Let A = an ad B = . Fi Fnd BA.

Solve the equation for the indicated variable. Assume that the dimensions are such that matrix multiplication and addition are possible and that inverses exist when needed. -Solve for A: AY - A = B

User row operations to change the matrix to reduced form. -

Write the system as a matrix equation of the form AX = B. -6 8

Write the linear system corresponding to the reduced augmented matrix. -

Solve using Gauss-Jordan elimination. -

Provide an appropriate response. -Solve the linear system corresponding to the following augmented matrix:

The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the system. -

Functions and Graphs

Limits and the Derivative

Additional Derivative Topics

Integration

Multivariable Calculus

Appendix A: Basic Algebra Review

Appendix B: Special Topics Online at Googlmjbxrg

Filters

Exam 4: Graphing and Optimization

The system cannot be solved by matrix inverse methods. Find a method that could be used and then solve the system. -

Find the values of a, b, c, and d that make the matrix equation true. -

Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines. -

Provide an appropriate response. -Use the matrix method on a graphing calculator to solve the system Carry values to two decimal places.

Solve the problem. -Suppose that the supply and demand equations for a logo sweat shirt in a particular week are eek are for fo the demand equation; and d , for the supply equation. Find the equilibrium price and quantit for the supply equation. Find the equilibrium price and quantiy.

Perform the indicated operations given the matrices. -Let A = an ad B = ;; 2A + 3B

Perform the indicated operations given the matrices. -Let A =

Solve the system as matrix equations using inverses. -

Perform the operation, if possible. -Let A = an ad B = . Fi Fnd BA.

Solve the equation for the indicated variable. Assume that the dimensions are such that matrix multiplication and addition are possible and that inverses exist when needed. -Solve for A: AY - A = B

User row operations to change the matrix to reduced form. -

Write the system as a matrix equation of the form AX = B. -6 8

Write the linear system corresponding to the reduced augmented matrix. -

Solve using Gauss-Jordan elimination. -

Provide an appropriate response. -Solve the linear system corresponding to the following augmented matrix:

The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the system. -

Functions and Graphs

Limits and the Derivative

Additional Derivative Topics

Integration

Multivariable Calculus

Appendix A: Basic Algebra Review

Appendix B: Special Topics Online at Googlmjbxrg

Filters