Math 7A Chapter 7 Review

Which expression is equivalent

to 7(8 + 2)?

• 7(8) . 7(2)

• (7 + 56) . (7 + 2)

• 7(8) + 7(2)

• 7(10)

Which expression is equivalent

to 3(11 - 5)?

• (11 + 3) - (5 + 3)

• (11 - 5) + (11 - 3)

• 11(3) - 5(3)

• 3(11) + 4(5)

Which expression has the same value as -8(5 - x)?

• -8 · 5 + 8 · x

• (-8 + 5) · (-8 + (-x))

• (8 - 5) · (-8 -x)

• -8 · 5 + 8 · x

Which of the following expressions can be written as 12(y - x)?

• 12y · 12x

• 12yx - 12xy

• 12y - 12x

• 12y · (-x)

An annual pass for an elementary student at a local museum is $48. Which expression can be used to mentally compute the total cost of 50 annual passes?

• 50(40 - 8)

• 25 . 2 + 40 . 8

• 40(50 + 8)

• 50(40 + 8)

Which expression has a coefficient of -2?

• $-2x$

• $\frac{1}{2}+4x$

• $6\ +\ 2x$

• $2$

Identify the like terms in the expression 8x + 6y + 5y + 8.

• 8, 6, and 5

• 6y and 5y

• 8

• 8x and 8

The volume of a cylinder can be determined by 1/3Bh, where B is the base area of the cylinder and h is the height. What is the coefficient in the expression 1/3Bh?

• 3

• 1/3

• h

• B

The total cost for renting a kayak is represented as 25 + 5.50m. What is the constant in the expression 25 + 5.50m?

• m

• 1.50

• 25

• 5.50m

What is the sum of (7x + 14) + (x - 12)?

• 8x - 26

• 8x + 2

• 21x - 12x

• 6x + 2