Khan academy how to find the domain of a function equation.

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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.