Equations and Proportions

Solve the following proportion.

• 13

• 23

• 19

• 9

Solve the following proportion.

• 6

• 7

• 8

• 9

Solve the following equation.

Solve the equation 10x - 3 = 8x + 1

• -1

• 1

• 2

• 4

Which expression represents "the product of 7 and the sum of a number and 3".

• 7x + 3

• 7(x + 3)

• 7 + 3x

• 7x - 3

Which expression represents "3x - 4"?

• The difference of 4 and 3 times a number.

• 4 less than 3 times a number.

• The sum of 3 times a number and 4.

• 4 increased by 3 times a number.

2 inches on a map represents 45 miles. How far apart are two cities separated by 9 inches on the map?

• 100 miles

• 10 miles

• 102.5 miles

• 202.5 miles

Bill wants to rent a car. Rental company A charges $35 per day plus $0.10 per mile driven. Company B charges $25 per day plus $0.15 per mile driven. After how many miles will the costs be the same?

• 20 miles

• 100 miles

• 200 miles

• 350 miles

3 times a number increased by 5 is equal to 9 times a number decreased by 7. What is the number?

• 9

• 1

• 6

• 12

Round 189.5706 to the nearest hundredths place.

• 189.57

• 189.58

• 189.5

• 189.6