4 years ago

The cost of renting a car is $35/wk plus $0.25/mi traveled during that week. An equation to represent the cost would be y = 35 +

0.25x, where x is the number of miles traveled. If your cost was $51.25, how many miles were you charged for traveling?

1 answer:

6 0

$\bf \stackrel{\textit{cost}}{y}=35+0.25x\implies \stackrel{\textit{cost}}{51.25}=35+0.25x\implies 51.21-35=0.25x
\\\\\\
16.21=0.25x\implies \cfrac{16.21}{0.25}=x\implies 64.84=x$

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