What is the answer to 7,200 ÷ y = 90

7,200 ÷ y = 90 equals y = 80.

First, multiply both sides by y. / Your problem should look like: 7200 = 90y.
Second, divide both sides by 90. / Your problem should look like:  = y.
Third, simplify  to 80. / Your problem should look like: 80 = y.
Fourth, switch sides. / Your problem should look like: y = 80, which is the answer. 

No he does not because he can only cover 12 square feet from 15 square feet which he will still need 3 more. this is because if 3×5=15 square feet and 15-12=3 which thats the answer

You can find it by multiplying the areas it show u