its easy but let me explain
Explanation:
If she earns $8.15 an hour and she works for 4 1/2 hours.
You multiply
$8.15 x 4.5 = n
n= $36.675 But your not done yet, ROUND TO HUNDREDTHS PLACE!!!
if there is a number 5 or higher next to the hundredths place then you bump the number up by 1
she would of earned $36.68 in 4.5 hours Glad to help