Math SOL 8 Revew

What is one solution to 5x + 1 = 7?

• 6/5

• 1

• 5/6

• 2

• 64

• 160

• 256

• 1,024

What is -√324?

• -18

• 18

• -17

• -16

• 12

• 4

• -72

• -144

A food company reduced the amount of salt in one of their food products from 700 milligrams to 630 milligrams. What is the percent decrease in the amount of salt in this food product?

• 10%

• 12%

• 70%

• 90%

Which number is an irrational number?

• 5.499

• √17

• -√9

• -10

• 1 7/8

• 18.5

• 7/4

Dora bought a total of 48 cupcakes. Each cupcake cost $0.55, including tax. Of the cupcakes she bought, 3/8 were vanilla cupcakes. What was the total cost of only the vanilla cupcakes?

• $26.40

• $16.50

• $9.90

• $6.60

Ordered the numbers from greatest to least.

• 0.45

• $42.71

• $44.71

• $46.71

• $56.71