EOU Review

Simplify the following expression:

 $3\left(a+b-c\right)-\left(3a-3b+2c\right)$  

• -c

• -5c

• -6b-c

• 6b-5c

• 6a+6b-c

Given the functions:

 $f\left(x\right)=-7x^2-11x+3$   and  $g\left(x\right)=11x+3$   evaluate:  $2f\left(x\right)-g\left(x\right)$  

1. A rectangular pool has a width of w feet and length 3 feet longer than 3 times the width. The Parkers want to build a fence and need to know the perimeter of the pool. Which of the following expressions represents the perimeter of the pool in terms of its width?

• 4w+4

• 5w+3

• 8w+8

• 10w+6

• 20w+12

Which of the following shows a binomial expression of degree 5 with leading coefficient of and a constant term of 4?

• $5x^4-3$

• $-3x^4+5$

• $4x^5-3$

• $-3x^5+4$

A phone company from the previous question charges $1.95 for every GB used in the US and $4.99 for every GB used externally. They also charge a flat $10.99 regardless of the amount of data used. Write a function which would represent the total cost.