A homeowner plans to hang wallpaper on one wall of the bedroom that is 10 feet long. If a strip of wallpaper is 20 inches wide and strips are hung vertically, how many strips of wallpaper will the homeowner require?

To determine how many strips of wallpaper are needed for a wall that is 10 feet long, first, it’s essential to convert the wall length into inches, since the width of the wallpaper is given in inches. There are 12 inches in a foot, so 10 feet is equal to 10 × 12, which results in 120 inches.

Next, you divide the total width of the wall by the width of one strip of wallpaper. Since each strip of wallpaper is 20 inches wide, you calculate how many strips fit into 120 inches by performing the division:

120 inches (wall length) ÷ 20 inches (strip width) = 6 strips.

This calculation shows that to cover a wall that is 120 inches long, the homeowner will need 6 strips of wallpaper. Thus, the correct answer is 6 strips, as this calculation considers both the width of the strips and the total length of the wall that needs to be covered.