Question 1

Solve the inequality   and write the solution set in interval notation.

Accepted Answer

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

Question 2

Determine the intervals on which the following polynomial is entirely negative and those on which it is entirely positive.

Accepted Answer

A) entirely negative:   ; entirely positive:   ,   
B) entirely negative:   ; entirely positive:   
C) entirely negative:   ,   ; entirely positive:   
D) entirely negative:   ; entirely positive:   
E) entirely negative:   ,   ; entirely positive:   
A) entirely negative:   ; entirely positive:   ,   
B) entirely negative:   ; entirely positive:   
C) entirely negative:   ,   ; entirely positive:   
D) entirely negative:   ; entirely positive:   
E) entirely negative:   ,   ; entirely positive:

Question 3

The average lengths L of cellular phone calls in minutes from 1999 to 2004 are shown in the table below.   Use the regression feature of a graphing utility to find a linear model for the data. Let t represent the year, with t = 9 corresponding to 1999. Use the model to predict the average lengths of cellular phone calls for the year 2006. Round your answer to two decimal places.

Accepted Answer

A) 6.54 minutes 
B) 1.64 minutes 
C) 2.27 minutes 
D) 4.27 minutes 
E) 3.27 minutes 
A) 6.54 minutes 
B) 1.64 minutes 
C) 2.27 minutes 
D) 4.27 minutes 
E) 3.27 minutes

Question 4

Simplify   and write the answer in standard form.

Accepted Answer

A)    i 
B)    i 
C)    i 
D)    i 
E)    i 
A)    i 
B)    i 
C)    i 
D)    i 
E)    i

Solve the inequality and write the solution set in interval notation.

Determine the intervals on which the following polynomial is entirely negative and those on which it is entirely positive.

Simplify and write the answer in standard form.

Functions and Their Graphs

Polynomial and Rational Functions

Exponential and Logarithmic Functions

Trigonometric Functions

Analytic Trigonometry

Additional Topics in Trigonometry

Linear Systems and Matrices

Sequences, Series, and Probability

Topics in Analytic Geometry

Algebraic Expressions and Equations

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Exam 2: Solving Equations and Inequalities

Solve the inequality and write the solution set in interval notation.

Determine the intervals on which the following polynomial is entirely negative and those on which it is entirely positive.

Simplify and write the answer in standard form.

Functions and Their Graphs

Polynomial and Rational Functions

Exponential and Logarithmic Functions

Trigonometric Functions

Analytic Trigonometry

Additional Topics in Trigonometry

Linear Systems and Matrices

Sequences, Series, and Probability

Topics in Analytic Geometry

Algebraic Expressions and Equations

Filters