If the width of a window is (x+7) inches and the length of the window is (x+9) inches, give the expression which represents the area of the window. Use the formula area=base.height. If x=8 inches, find the area of the window using the expression you found in part a.

(x+7).(x+9)

x = 8
(8+7).(8+9)=255

To find the expression that represents the area of the window, we can multiply the width by the length.

Given that the width of the window is (x+7) inches and the length is (x+9) inches, we can write the expression for the area as:

Area = (x + 7) * (x + 9)

Now, we need to substitute x = 8 inches into the expression to find the area of the window. Let's calculate it:

Area = (8 + 7) * (8 + 9)
= 15 * 17
= 255

Therefore, the area of the window is 255 square inches.