Answer:
He made seven A's.
Step-by-step explanation:
360-220=140
140/20=7
Answer:
A
D
E
Step-by-step explanation:
Answer: -1t + 720
Step-by-step explanation:
He worked at both jobs for 90 hours for this month.
He worked t hours as a tutor which means that as a waiter he worked;
= 90 - t hours
The amount earned is therefore;
= 7t + (8 * (90 - t))
= 7t + 720 - 8t
= -1t + 720