ComGas, the Cambridge power company, charges its customers $7.77 a month, plus an additional $0.99 per therm up to 37 therms and $0.69 per therm above 37 therms. (A therm is a unit of gas supplied.) Let
Be the monthly cost in dollars for using x therms. Which of the following is the formula for C?
A)
B)
C)
D)
Correct Answer:
Verified
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