Math Writing Questions 5

Question 1

A runner completes a race in t minutes. A second runner finishes 8 minutes faster. Which expression gives the second runner's time?

Accepted Answer

t - 8

Answer

'Faster' means less time, so the second runner's time is t - 8.

Question 2

Which equation represents 'half of a number increased by 9 is 21'?

Accepted Answer

n/2 + 9 = 21

Answer

'Half of n' is n/2, and 'increased by 9' gives n/2 + 9 = 21.

Question 3

A vendor sells apples for $0.50 each and oranges for $0.75 each. Which expression gives the total cost for a apples and g oranges?

Accepted Answer

0.50a + 0.75g

Answer

Multiply each item's price by its quantity and add: 0.50a + 0.75g.

Question 4

Which inequality represents 'the product of 3 and a number x is no less than 15'?

Accepted Answer

3x ≥ 15

Answer

'No less than' means 'greater than or equal to,' so 3x ≥ 15.

Question 5

A pool is being filled at 8 gallons per minute and simultaneously drained at 3 gallons per minute. Which expression gives the net gallons after m minutes?

Accepted Answer

5m

Answer

Net fill rate is 8 - 3 = 5 gallons per minute, so the net gallons after m minutes is 5m.

Math Practice Test

Math Practice Test

Math Writing Questions 5