The charge for a one-day rental of a car from shurtz car rental agency is 24 plus 15 cents for each mile driven if Jill drives 85 miles how much is the charge how many miles for 42?

Answer 1

f(x)=mx+b

m= .15 (slope) b=constant

f(x)=.15x+ 24

f(85)=.15(85)+24= $36.75

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f(x)=.15x+24=$42

-24 -24

f(x)=.15x=$42

.15/42

x=120mi