Answer:
Step-by-step explanation:
the first one
You're lucky that I was able to do this :)
The answer is 
She gotta work 27 hours cuz 344.24/12.75
Answer:
a
Step-by-step explanation:
Divide the money raised by the number of laps skated.
$600.00 ÷ 1200 = $0.50 → a
Answer:
9x - 9
Step-by-step explanation:
6x + 3x = 9x. 1- 10 = -9
Combine the like terms