Question 1

Solve using matrices.
-5x - y + 3z = 44 2x + 7y + 2z = 80
-4x - 3y + z = -52

Accepted Answer

A)  (8, 4, 8) 
B)  (16, 8, -8) 
C)  (-8, 8, 16) 
D)  (8, 8, 4) 
A)  (8, 4, 8) 
B)  (16, 8, -8) 
C)  (-8, 8, 16) 
D)  (8, 8, 4)

Question 2

Solve using Cramer's rule.
-8a + 3c = 69 5a + 9b - 9c = 30
5a - 9b = -33

Accepted Answer

A)  (7, 7, 7) 
B)  (6, -7, -7) 
C)  (6, 7, 7) 
D)  (7, 5, 7) 
A)  (7, 7, 7) 
B)  (6, -7, -7) 
C)  (6, 7, 7) 
D)  (7, 5, 7)

Question 3

For the pair of functions, find the indicated sum, difference, product, or quotient.
-f(x) = 4x - 4, g(x) = 6x - 6 Find (f -G)(x).

Accepted Answer

A)  10x - 10 
B)  -2x - 10 
C)  -2x + 2 
D)  2x - 2 
A)  10x - 10 
B)  -2x - 10 
C)  -2x + 2 
D)  2x - 2

Question 4

Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.
-

Accepted Answer

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

Question 5

Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.
-(y, 0) and (0,B)

Accepted Answer

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

Question 6

Solve.
-Let f(x) = 6x + 8 and g(x) =   + 7. Find f(7) - g(7) .

Accepted Answer

A)  -195 
B)  -203 
C)  -202 
D)  -210 
A)  -195 
B)  -203 
C)  -202 
D)  -210

Question 7

Solve using matrices.
-5x - 2y = -1 x + 4y = 35

Accepted Answer

A)  (2, 8) 
B)  (2, 9) 
C)  (3, 9) 
D)  (3, 8) 
A)  (2, 8) 
B)  (2, 9) 
C)  (3, 9) 
D)  (3, 8)

Question 8

Solve.
-Let f(x) = -8x + 6 and g(x) =   - 1. Find g(2) - f(2) .

Accepted Answer

A)  44 
B)  43 
C)  37 
D)  38 
A)  44 
B)  43 
C)  37 
D)  38

Question 9

Find the median.
-2.7, 4.7, 8.5, 3.5

Accepted Answer

A)  3.5 
B)  4.7 
C)  4.1 
D)  8.5 
A)  3.5 
B)  4.7 
C)  4.1 
D)  8.5

Question 10

Find the center and the radius of the circle.
-

Accepted Answer

A)  (7, 0), r = 49 
B)  (0, -7), r = 7 
C)  (-7, 0), r = 49 
D)  (0, 7), r = 7 
A)  (7, 0), r = 49 
B)  (0, -7), r = 7 
C)  (-7, 0), r = 49 
D)  (0, 7), r = 7

Question 11

Use synthetic division to divide.
-  ÷ (r - 8)

Accepted Answer

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

Question 12

Solve the problem.
-Anthony wanted to buy a particular kind of cheese. He checked in five different stores and found the following prices per pound:
$6)75, $5.25, $6.45, $5.75, and $5.65What was the mean price per pound?

Accepted Answer

A)  $6.75 
B)  $5.75 
C)  $6.07 
D)  $5.97 
A)  $6.75 
B)  $5.75 
C)  $6.07 
D)  $5.97

Question 13

Find the midpoint of the segment with the given endpoints.
-(-3.9, 3.1) and (7.3, 0.4)

Accepted Answer

A)  -5.6, 1.35 
B)  1.7, 1.75 
C)  3.4, 3.5 
D)  -11.2, 2.7 
A)  -5.6, 1.35 
B)  1.7, 1.75 
C)  3.4, 3.5 
D)  -11.2, 2.7

Question 14

Solve using matrices.
-2x + 4y = - 1 7x - y = 4

Accepted Answer

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

Question 15

Solve using Cramer's rule.
-2x - 2y = 2 2x + 3y = 37

Accepted Answer

A)  (-7, 8) 
B)  (-8, -7) 
C)  (7, 8) 
D)  (8, 7) 
A)  (-7, 8) 
B)  (-8, -7) 
C)  (7, 8) 
D)  (8, 7)

Question 16

Give the equation for a circle with the given center and radius.
-Center at (5, 4), radius 7

Accepted Answer

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

Question 17

Evaluate.
-

Accepted Answer

A)  -342 
B)  288 
C)  315 
D)  -315 
A)  -342 
B)  288 
C)  315 
D)  -315

Question 18

Solve.
-Let f(x) = 7x + 4 and g(x) =   + 9. Find g(3) - f(3) .

Accepted Answer

A)  29 
B)  24 
C)  33 
D)  20 
A)  29 
B)  24 
C)  33 
D)  20

Question 19

Solve using matrices.
-6x + 6y = 2 9x - 6z = -8
2y - 3z = 1

Accepted Answer

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

Question 20

Give the equation for a circle with the given center and radius.
-Center at (-6, -4), radius

Accepted Answer

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

Solve using matrices. -5x - y + 3z = 44 2x + 7y + 2z = 80 -4x - 3y + z = -52

Solve using Cramer's rule. -8a + 3c = 69 5a + 9b - 9c = 30 5a - 9b = -33

For the pair of functions, find the indicated sum, difference, product, or quotient. -f(x) = 4x - 4, g(x) = 6x - 6 Find (f -G)(x).

Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places. -

Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places. -(y, 0) and (0,B)

Solve. -Let f(x) = 6x + 8 and g(x) = + 7. Find f(7) - g(7) .

Solve using matrices. -5x - 2y = -1 x + 4y = 35

Solve. -Let f(x) = -8x + 6 and g(x) = - 1. Find g(2) - f(2) .

Find the median. -2.7, 4.7, 8.5, 3.5

Find the center and the radius of the circle. -

Use synthetic division to divide. - ÷ (r - 8)

Solve the problem. -Anthony wanted to buy a particular kind of cheese. He checked in five different stores and found the following prices per pound: $6)75, $5.25, $6.45, $5.75, and $5.65What was the mean price per pound?

Find the midpoint of the segment with the given endpoints. -(-3.9, 3.1) and (7.3, 0.4)

Solve using matrices. -2x + 4y = - 1 7x - y = 4

Solve using Cramer's rule. -2x - 2y = 2 2x + 3y = 37

Give the equation for a circle with the given center and radius. -Center at (5, 4), radius 7

Evaluate. -

Solve. -Let f(x) = 7x + 4 and g(x) = + 9. Find g(3) - f(3) .

Solve using matrices. -6x + 6y = 2 9x - 6z = -8 2y - 3z = 1

Give the equation for a circle with the given center and radius. -Center at (-6, -4), radius

Introduction

Introduction to Real Numbers and Algebraic Expressions

Solving Equations and Inequalities

Graphs of Linear Equations

Polynomials: Operations

Polynomials: Factoring

Rational Expressions and Equations

Graphs, Functions, and Applications

Systems of Equations

More on Inequalities

Radical Expressions, Equations, and Functions

Quadratic Equations and Functions

Exponential Functions and Logarithmic Functions

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Exam 14: Calculating Means and Medians of Data Sets

Solve using matrices. -5x - y + 3z = 44 2x + 7y + 2z = 80 -4x - 3y + z = -52

Solve using Cramer's rule. -8a + 3c = 69 5a + 9b - 9c = 30 5a - 9b = -33

For the pair of functions, find the indicated sum, difference, product, or quotient. -f(x) = 4x - 4, g(x) = 6x - 6 Find (f -G)(x).

Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places. -

Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places. -(y, 0) and (0,B)

Solve. -Let f(x) = 6x + 8 and g(x) = + 7. Find f(7) - g(7) .

Solve using matrices. -5x - 2y = -1 x + 4y = 35

Solve. -Let f(x) = -8x + 6 and g(x) = - 1. Find g(2) - f(2) .

Find the median. -2.7, 4.7, 8.5, 3.5

Find the center and the radius of the circle. -

Use synthetic division to divide. - ÷ (r - 8)

Solve the problem. -Anthony wanted to buy a particular kind of cheese. He checked in five different stores and found the following prices per pound: $6)75, $5.25, $6.45, $5.75, and $5.65What was the mean price per pound?

Find the midpoint of the segment with the given endpoints. -(-3.9, 3.1) and (7.3, 0.4)

Solve using matrices. -2x + 4y = - 1 7x - y = 4

Solve using Cramer's rule. -2x - 2y = 2 2x + 3y = 37

Give the equation for a circle with the given center and radius. -Center at (5, 4), radius 7

Evaluate. -

Solve. -Let f(x) = 7x + 4 and g(x) = + 9. Find g(3) - f(3) .

Solve using matrices. -6x + 6y = 2 9x - 6z = -8 2y - 3z = 1

Give the equation for a circle with the given center and radius. -Center at (-6, -4), radius

Introduction

Introduction to Real Numbers and Algebraic Expressions

Solving Equations and Inequalities

Graphs of Linear Equations

Polynomials: Operations

Polynomials: Factoring

Rational Expressions and Equations

Graphs, Functions, and Applications

Systems of Equations

More on Inequalities

Radical Expressions, Equations, and Functions

Quadratic Equations and Functions

Exponential Functions and Logarithmic Functions

Filters