Final answer:
Steve earns $21 per hour from two part-time jobs. He referees for 10 hours and drives a bus for 30 hours each week. Combining his earnings from both jobs, Steve earns a total of $840 each week.
Step-by-step explanation:
Steve works two jobs that both pay $21 per hour. He works as a football referee for 10 hours a week, and as a bus driver for 30 hours per week. To find out how much he earns each week, we can calculate it using simple multiplication.
For football refereeing, Steve earns:
10 hours/week * $21/hour = $210/week
As a bus driver, Steve earns:
30 hours/week * $21/hour = $630/week
To get Steve's total weekly earnings, we add the amounts from both jobs:
$210/week + $630/week = $840/week
Therefore, Steve earns a total of $840 each week from both of his jobs combined.