Carson and Emily make a poster for school. The poster is in the shape of a rectangle. The length of the poster measures 7 units, and the area of the poster is 42 square units. What is the width of the poster? (1 point)
The area of a rectangle is calculated by multiplying its length by its width. Therefore, we can set up an equation to solve for the width of the poster:
Length x Width = Area
7 x Width = 42
Width = 42 / 7
Width = 6 units
Therefore, the width of the poster is 6 units.