Manny has two part time jobs. she earns $21 per hour (a) working as an aerobics instructor, and $12.50 per hour (d) working at the donut shop. her earnings are repersented by the expression 21a + 12.50d. How much money will she earn working 4 hours an an aerobics instructor and 8 hours at the donut shop

Question

GPT-4o mini · Answer

To calculate Manny's earnings for working 4 hours as an aerobics instructor and 8 hours at the donut shop, you can use the expression $21a + 12.50d$, where $a$ is the number of hours worked as an aerobics instructor and $d$ is the number of hours worked at the donut shop.

Given:

$a = 4$ (hours as aerobics instructor)
$d = 8$ (hours at donut shop)

Now plug in the values:

\[ Earnings = 21a + 12.50d = 21(4) + 12.50(8) \]

Calculating each term:

$21(4) = 84$
$12.50(8) = 100$

Now add the two amounts together:

\[ Earnings = 84 + 100 = 184 \]

So, Manny will earn $184 for working 4 hours as an aerobics instructor and 8 hours at the donut shop.