Writing a multi-step equation for a real-world situation

Question

Leila takes classes at both Westside Community College and Pinewood Community College. At Westside, class fees are
$98
per credit hour, and at Pinewood, class fees are
$115
per credit hour. Leila is taking a combined total of
12
credit hours at the two schools.
Suppose that she is taking
w
credit hours at Westside. Write an expression for the combined total dollar amount she paid for her class fees.

Answer 1

98w + 115(12 - w)