Answer appropriately.The cost of renting an automobile is $31 dollars per day plus $0.09 per mile. Express the cost c(x) of renting a car for the day as a function of the miles driven x.
A. c(x) = 31x + 0.09
B. c(x) = 0.09x + 31
C. c(x) = -0.09x + 31
D. c(x) = 0.09x - 31
Answer: B
Mathematics
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