Answer:
C.) (–2.2, –3)
Step-by-step explanation: keep it simple
Find his rate:
120 / 15 = $8 per hour
Multiply the rate by hours:
$8 x 20 hours = $160
He will earn $160
Answer:

Step-by-step explanation:





The problem rewritten is 77a-42c
Answer:
You have to give the number by which the 20% is increased in order to cross multiply and divide by a hundred to find the missing % of the decrease. Otherwise, you would simply subtract 20% from 100%, which seems unlikely to be the answer. We need more information.
Step-by-step explanation: