Math Writing Questions 3

Question 1

A word problem states: 'Sarah earns $15 per hour and works h hours. She also receives a $50 bonus.' Which equation represents her total earnings T?

Accepted Answer

T = 15h + 50

Answer

Total earnings equals the hourly rate times hours worked plus the flat bonus: T = 15h + 50.

Question 2

Which inequality represents 'a number x is at most 12'?

Accepted Answer

x ≤ 12

Answer

'At most 12' means x can equal 12 or be less, so x ≤ 12.

Question 3

A tank holds 200 gallons and drains at 4 gallons per minute. Which expression gives the amount W remaining after m minutes?

Accepted Answer

W = 200 - 4m

Answer

Starting volume minus the drain rate times minutes gives W = 200 - 4m.

Question 4

Which expression represents 'three less than twice a number n'?

Accepted Answer

2n - 3

Answer

'Twice a number' is 2n, and 'three less than' means subtract 3, giving 2n - 3.

Question 5

A store marks up items by 20%. If an item costs the store $c, which expression gives the selling price S?

Accepted Answer

S = 1.2c

Answer

A 20% markup means multiplying the cost by 1.20, so S = 1.2c.

Math Practice Test