Unit 3 AdvancedTest Review

EE.1

Evaluate: 9² - (3+13) + 11

A: 81 – (16) + 11 65 + 11 = 76

Simplify the expression:

4² - 2³

A: 8

EE.2aWrite a word phrase that describes 8k – 44

A: The difference in eight times a number k and forty-four

Rita is moving a stack of 24 books to the library. If she can carry m books in one load, write an expression the represents how many trips it will take her to get all the books there.

A:

Mike has x stickers. Tim has 8 times as many stickers as Mike. Jill has 38 stickers. Write an expression that represents how many stickers they have total.

A: x + 8x + 38

EE.2b

List the number of terms and the coefficients of the following expression:P + 24x – 4y + 5

A: 4; 1, 24, -4

How many factors does the following expression have:X(3x-7)(5x-8)

A: 3

EE.2cEvalute 4(n + 7) -3n when n = ½

A: 28

Given the formula I = prt, where I = interest, p = principal, r = rate, and t = time; how much interest does Christian earn on the 300 dollars he invested at .02 after 8 years.

A: $48

What is the value of the following when r = 8:r² + 2r - r + 82r

A: 716

Which expression is equal to 16x + 42ya. (10x + 30y) + (6x + 12y)b. 4(4x + 5y) + 2(11y)c. 8(2x + 6y)d. 10x + 10y + x + y + 4x + 4y

A: choice b

The formula for the perimeter of a rectangle is 2L + 2W. If the length of a given rectangle is 5x + 2, and the width is 2y + 19, which expression can represent the perimeter of the rectangle?HINT: Multiply the length and width each by 2, then combine all like terms.

A: 10x + 4y +42

Rewrite 9(4x + 3y) + 29x without parenthesis.

A: 65x + 27y

Which expression is equivalent to 4a + 4b?a. 4abb. 4(a + b)c. 4a + bd. A + 4b

A: choice b

Simplify the expression:

(4x + 3) – (-2x + 8)

A: 6x - 5

Trevolis thinks that the two expressions 4(8z -4) + 2z and 34z – 4 are equivalent. Is she correct? Explain why or why not.

A: He is not correct. The expressions are not equivalent because the simplified version is 34z -16. (Trevolis forgot to distribute the 4 to the 4. )

A square has a perimeter of 12x + 28. What is the length of each side?

A: 3x + 7

Larry bought a used car for x dollars. One year later, the value of the car is 0.84x. Which expressions represents another way to describe the change in value of the car?

A: 16% decrease

Amy saw that a book she wanted was on sale for 15% off the retail price. If p represents the original price, write an expression that represents how much Amy can expect to pay for the book.

A: p - .15p

All girl scout cookies are $2.75 a box. Your mom wants to purchase tagalongs and samoas. Write an expression that represents the total cost (T) of the cookies if t represents the number of tagalongs and s represents the number of samoas.

A: T = 2.75 (t + s)