## College Algebra 7th Edition

Published by Brooks Cole

# Chapter P, Prerequisites - Section P.1 - Modeling the Real World with Algebra - P.1 Exercises - Page 6: 15

#### Answer

$C=3.5x$

#### Work Step by Step

If one gallon costs $3.50$, then $x$ gallons would cost $3.50\times x$, or $3.5x$ dollars.

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