Jose' is putting up wallpaper is $1.75 per square foot. one wall measures 10 by 9 feet. how much will wallpaper cost for this wall?

If you are finding the perimeter the answer would be:

$15.50

If you do 9*$1.75=$15.75

If you do 10*$1.75=17.50

When you find perimeter it’s length+length + width + width

This gives you $15.50

If you are finding the area the answer would be:

$157.50

To find area you do 10*9=90

Then, you do 90*$1.75=$157.50