Manny has two part-time jobs. She earns $21.00 per hour (a) working as an aerobics instructor, and $12.50 per hour (s) working at the skating rink. Her earnings are represented by the expression 21a + 12,5s . How much money will she earn working 4 hours as an aerobics instructor and 8 hours at the skating rink? $ Remember to include the dollars and cents.

Question

GPT-4o mini · Answer

To calculate Manny's earnings from both jobs, we can use the expression $ 21a + 12.5s $, where $ a $ is the number of hours worked as an aerobics instructor and $ s $ is the number of hours worked at the skating rink.

Given:

$ a = 4 $ hours (as an aerobics instructor)
$ s = 8 $ hours (at the skating rink)

Now substitute $ a $ and $ s $ into the expression:

\[ Earnings = 21a + 12.5s \]

Substituting the values:

\[ Earnings = 21(4) + 12.5(8) \]

Calculating each term:

$ 21(4) = 84 $
$ 12.5(8) = 100 $

Now add the two results together:

\[ Earnings = 84 + 100 = 184 \]

So, Manny will earn a total of $184.00.