Find the range of values of k at which graphs of y= |(x+1)(x-3)| and y=x+k have 2 common points

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.

For the inequality |c| < |d| to be true, which of the following must be true?

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.