I’m not sure abt 21 but 22 is the second one and the 4th one. So 2,4.
5•3•x•x•x-5•x•x•y+5•x•y=
5x(3x^2-xy+y)
Hope this explanation helps
Answer:
5 hours
Step-by-step explanation:
The total cost is the fee plus the hours* hourly cost
450 = 200+50*h where h is the hours
Subtract 200 from each side
450-200 = 200-200 +50h
250 = 50h
Divide each side by 50
250/50 = 50h/50
5 = h
5 hours
The answer for #8 is C.
7.1 x 7.1 = 50.41
For 10 I can't help you with because there are no answer choices shown on the photo. I would wait for another to help.
Answer:
b
Step-by-step explanation:
i think the answers b