Mathematics
Mathematics, 31.10.2019 04:31, nireegnu

Astudy of driving costs based on 2012 medium-sized sedans found that the average cost (car payments, gas, insurance, upkeep, and depreciation) in cents per mile is approximately:

c(x) = 1910.5/x^1.72 + 42.9 (5 ≤ x ≤ 20)

where x (in thousands) denotes the number of miles the car is driven each year.

show that the graph of c is concave upward on the interval (5, 20).

answer
Answers: 3

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Astudy of driving costs based on 2012 medium-sized sedans found that the average cost (car payments,...

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