You earn $3 an hour as a waitress. After working 3 hours, you

earn $12, $5, and $7 in tips. How much money did you earn
in total? Explain how you found your answer.

(3 * 3) + 12 + 5 + 7 = ?

To find the total amount of money earned, we need to add the amount earned from hourly wages and tips.

Amount earned from hourly wages = $3 x 3 hours = $9

Amount earned from tips = $12 + $5 + $7 = $24

Total amount earned = Amount earned from hourly wages + Amount earned from tips
Total amount earned = $9 + $24 = $33

Therefore, you earned a total of $33.

To find the total amount you earned, you need to add your hourly wage to the tips you received.

First, calculate the earnings from the wages. You earned $3 per hour, and you worked for 3 hours. Multiply $3 by 3 to get $9 (3 * 3 = $9).

Next, calculate the total amount earned from the tips. You received $12, $5, and $7 in tips. Add these three amounts together: $12 + $5 + $7 = $24.

Finally, add the earnings from wages and the total amount earned from tips to find your total earnings: $9 + $24 = $33.

So, you earned a total of $33.

Explanation:
- Hourly wage: $3 per hour, worked 3 hours -> $3 * 3 = $9
- Tips received: $12 + $5 + $7 = $24
- Total earnings: $9 + $24 = $33