Question 12 2 pts A municipal electrical utility charges cus

Question 12 2 pts A municipal electrical utility charges customers a $15 per month fee plus 12 cents per kilowatt- hour of energy used. Write an equation for a customer\'s monthly costs, C (in dollars) for electric service as a function of r, the kilowatt-hours used. 0 C(x) 12 + 0.15x C(z) = 15e0.12z 0 C(x) = 15 + 12z 0 C(z) = 15 + 0.12c O C(z)= 15(1.12)\" 0

Solution

Number of kilowatts of energy used = x

Cost of x kilowatts of energy used = $0.12x (100 cents = 1 $)

Customer\'s monthly cost = Per month fee + Cost of x kilowatts of energy used

             C(x) = 15 + 0.12x

option (4) is correct.