Answer:
8 by 15 ?
Step-by-step explanation:
8 by 15 . ..........
Answer:
1 dollar every 1/39 hour
Step-by-step explanation:
If Christopher earns $78 in two hours, he must earn $39 dollars in one hour because 78/2 is 39. Therefore, every hour Christopher earns $39. To find the amount of hours per dollar, divide 1, the hour, by 39, the money per hour, to get 1/39.
- 5 and -4 are coefficients, so the product is (-5)(-4) = 20
