Question

Suppose gas costs $3.70 a gallon. We make a model for the cost C of buying x gallons of gas by writing the formula
C =

Answer 1

\[3.7x\]

Answer 2

I mean \[ C = 3.7 x\]

Answer 3

Since we don't have that given factor to be x / _, we couldn't really do cross multiplication (if it was given then another story), but we would do


3.7x = C

or

C = 3.7x