Now write an expression in terms of x and y that represents the total number of tiles needed for 72 square feet.

Answer 1

Let t represent the number of tiles needed for 1 square foot.

Then the total number of tiles needed for 72 square feet can be expressed as:

t * 72

However, since the size of each tile is given in terms of x and y, we need to use the area formula:

area = length * width

For each tile, the length and width are x and y, respectively.

So, the area of each tile is:

x * y

Therefore, the expression for the total number of tiles needed can be written as:

(x * y) * 72