How do i use a graphing calculator?

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

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.

Add the fractions and simplify 1/2+ 1/3