Question

A rectangle that has an area of 357 square inches is 17 inches wide. How long is the rectangle?

Answer 1

21 inches long. 17x21=357

Answer 2

Hi Serenafrancis1! :)

The formula for the area of a rectangle is:
$L*W$
$L=length$
$W=Width$

We can input all the information we know to solve for the missing variable:
$L*17=357$
Divide both sides by 17
$(L*17)/17=(357)/17$
Simplify.
$L=21$

The rectangle is 21 inches long.

Hope this helps.
-Benjamin