Math Writing Questions 4

Question 1

A gym charges a $30 enrollment fee plus $25 per month. Which equation gives the total cost C after m months?

Accepted Answer

C = 25m + 30

Answer

The one-time fee is 30 and the recurring monthly charge is 25m, giving C = 25m + 30.

Question 2

Which expression represents 'the quotient of a number n and 4, increased by 7'?

Accepted Answer

n/4 + 7

Answer

'Quotient of n and 4' is n÷4, and 'increased by 7' adds 7, giving n/4 + 7.

Question 3

A population of 500 bacteria doubles every hour. Which expression gives the population P after h hours?

Accepted Answer

P = 500 · 2^h

Answer

Doubling each hour is exponential growth: P = 500 · 2^h.

Question 4

Which inequality represents 'a number y is more than 5 units away from zero'?

Accepted Answer

|y| > 5

Answer

Distance from zero is absolute value, and 'more than 5' means |y| > 5.

Question 5

A car travels at a constant speed of s mph. Which expression gives the distance d after t hours if it started 10 miles ahead?

Accepted Answer

d = st + 10

Answer

Distance equals speed × time, plus the head-start of 10 miles: d = st + 10.

Math Practice Test