Write and equation on/ three times the sum of six and a number is 69

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Do,h = (7, 9) (14, 18) the scale factor is

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.