Question of the Day (16/03/2021)

Question

acedstud

Asked: March 16, 20212021-03-16T06:05:08+00:00 2021-03-16T06:05:08+00:00In: Middle School/Junior Secondary School

The amount, $A$ in dollars, spent by Edward each month at the gym depends on the number of hours $(h)$ he spends exercising at the gym that month.

The relationship between the amount he spends and the number of hours he exercises is modeled by the formula $A=9h+13$ .

Last month, Edward spent $238 at the gym. How many hours did he spend exercising at the gym last month?

Leave an answer

acedstud · Answer 1 · 2021-03-16T06:15:16+00:00

acedstud

Given that the relationship between the amount spent, A, and the number of hours, h, is $A=9h+13$ .

Given that he spent $238 last month, that is $A=$238$ .

Thus, $238=9h+13$

Subtracting 13 from both sides, we have:

$238 - 13 = 9h + 13 - 13 \Rightarrow 225 = 9h$

Dividing both sides by 9, we have:

$\dfrac{225}{9} = \dfrac{9h}{9} \Rightarrow 25 = h$

Therefore, Edward spent 25 hours exercising at the gym last month.