Is the answer to this “y is less than or equal to zero”?

On a piece of paper graph f(x)=5•(0.4)^x

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Evaluate the expression. (9 + 5)(3 + 2)0