Step-by-step explanation:
the answer for this question is -6x
Answer:
s = 
Step-by-step explanation:

so:


A = 60
Therefore:
s = 
Answer:
what?
Step-by-step explanation:
Answer:
The best and most correct answer among the choices provided by your question is the third choice or letter C. The total number of hours is 17.
For h>7
C=210+20(h-7)
C=210+20h-140
C=20h+70, h>7
410=20h+70
20h=340
h=17 hours
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