Question

Eric takes classes at both Westside Community College and Pinewood Community College. At Westfield class fees are $98 per credit hour and at Pinewood, class fees are $115 per credit hour. Eric is taking a combined total of 17 credit hours at the two schools. Suppose that he is taking W credit hours at Westside. Write an expression for the combined total dollar amount he paid for class fees. Total paid ( in dollars) =

Answer 1

Let W = number of credit hours at Westside

Since the total credit hours is 17, the number of credit hours at Pinewood is :

`17-W`

To find the expression for the combined total dollar amount for both class.

Multiply each hours by the corresponding fees.

The expression will be :

`\begin{gathered} 98(W)+115(17-W) \\ =98W+1955-115W \\ =1955-17W \end{gathered}`

The correct answer is :

1955 - 17W