Question 1

Add. Simplify, if possible.
-

Accepted Answer

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

Question 2

Write the word or phrase that best completes each statement or answers the question.
 
-If 4 is substituted for x in the rational expression   , the result is   . Mathematicians have been known to say "Any number divided by itself is 1." Does this mean that this expression is equal to 1 for x = 4 ? Explain why or why not.

Accepted Answer

The answer of Write the word or phrase that best...

Question 3

Find the reciprocal.
-

Accepted Answer

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

Question 4

Solve.
-According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 18 volts are applied, the current is 4 amperes. What is the current when 13 volts are applied?

Accepted Answer

A)  4.5 amperes 
B)  35 amperes 
C)  2.89 amperes 
D)  58.5 amperes 
A)  4.5 amperes 
B)  35 amperes 
C)  2.89 amperes 
D)  58.5 amperes

Question 5

Multiply and, if possible, simplify.
-

Accepted Answer

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

Question 6

Simplify.
-

Accepted Answer

A)    
B)    
C)  5x + 1 
D)    
A)    
B)    
C)  5x + 1 
D)

Question 7

Divide and simplify.
-

Accepted Answer

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

Question 8

Subtract. Simplify, if possible.
-

Accepted Answer

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

Question 9

Solve.
-The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft
Apart?

Accepted Answer

A)  3 lb 
B)  1 lb 
C)  2 lb 
D)  4 lb 
A)  3 lb 
B)  1 lb 
C)  2 lb 
D)  4 lb

Question 10

Add. Simplify, if possible.
-

Accepted Answer

A)  4 
B)    
C)    
D)    
A)  4 
B)    
C)    
D)

Question 11

Perform the indicated operation. Simplify, if possible.
-

Accepted Answer

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

Question 12

Find the reciprocal.
-

Accepted Answer

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

Question 13

Find an equation of variation in which the following are true.
-y varies jointly as x and p and inversely as the square of s, and   .

Accepted Answer

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

Question 14

Find the reciprocal.
-

Accepted Answer

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

Question 15

Find the reciprocal.
-

Accepted Answer

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

Question 16

Perform the indicated operation. Simplify, if possible.
-

Accepted Answer

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

Question 17

Add, first finding the LCD. Simplify, if possible.
-

Accepted Answer

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

Question 18

Find the equation of variation if the following is true.
-Suppose y varies directly as x and y = 0.9 when x = 0.1.

Accepted Answer

A)  y = 0.8x 
B)  y = 9x 
C)    
D)  y = 1x 
A)  y = 0.8x 
B)  y = 9x 
C)    
D)  y = 1x

Question 19

Solve the problem.
-Martha can rake the leaves in her yard in 5 hours. Her younger brother can do the job in 7 hours. How long will it take them to do the job if they work together?

Accepted Answer

A)    
B)    
C)  7 hr 
D)    
A)    
B)    
C)  7 hr 
D)

Question 20

Subtract. Simplify, if possible.
-

Accepted Answer

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

Add. Simplify, if possible. -

Find the reciprocal. -

Solve. -According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 18 volts are applied, the current is 4 amperes. What is the current when 13 volts are applied?

Multiply and, if possible, simplify. -

Simplify. -

Divide and simplify. -

Subtract. Simplify, if possible. -

Solve. -The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft Apart?

Add. Simplify, if possible. -

Perform the indicated operation. Simplify, if possible. -

Find the reciprocal. -

Find an equation of variation in which the following are true. -y varies jointly as x and p and inversely as the square of s, and .

Find the reciprocal. -

Find the reciprocal. -

Perform the indicated operation. Simplify, if possible. -

Add, first finding the LCD. Simplify, if possible. -

Find the equation of variation if the following is true. -Suppose y varies directly as x and y = 0.9 when x = 0.1.

Solve the problem. -Martha can rake the leaves in her yard in 5 hours. Her younger brother can do the job in 7 hours. How long will it take them to do the job if they work together?

Subtract. Simplify, if possible. -

Introduction

Introduction to Real Numbers and Algebraic Expressions

Solving Equations and Inequalities

Graphs of Linear Equations

Polynomials: Operations

Polynomials: Factoring

Graphs, Functions, and Applications

Systems of Equations

More on Inequalities

Radical Expressions, Equations, and Functions

Quadratic Equations and Functions

Exponential Functions and Logarithmic Functions

Calculating Means and Medians of Data Sets

Filters

Exam 7: Rational Expressions and Equations

Add. Simplify, if possible. -

Find the reciprocal. -

Solve. -According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 18 volts are applied, the current is 4 amperes. What is the current when 13 volts are applied?

Multiply and, if possible, simplify. -

Simplify. -

Divide and simplify. -

Subtract. Simplify, if possible. -

Solve. -The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft Apart?

Add. Simplify, if possible. -

Perform the indicated operation. Simplify, if possible. -

Find the reciprocal. -

Find an equation of variation in which the following are true. -y varies jointly as x and p and inversely as the square of s, and .

Find the reciprocal. -

Find the reciprocal. -

Perform the indicated operation. Simplify, if possible. -

Add, first finding the LCD. Simplify, if possible. -

Find the equation of variation if the following is true. -Suppose y varies directly as x and y = 0.9 when x = 0.1.

Solve the problem. -Martha can rake the leaves in her yard in 5 hours. Her younger brother can do the job in 7 hours. How long will it take them to do the job if they work together?

Subtract. Simplify, if possible. -

Introduction

Introduction to Real Numbers and Algebraic Expressions

Solving Equations and Inequalities

Graphs of Linear Equations

Polynomials: Operations

Polynomials: Factoring

Graphs, Functions, and Applications

Systems of Equations

More on Inequalities

Radical Expressions, Equations, and Functions

Quadratic Equations and Functions

Exponential Functions and Logarithmic Functions

Calculating Means and Medians of Data Sets

Filters