Find the measure of the arc or angle indicated. Assume the lines which appear to be diameters are actual diameters

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Find the roots of the equation below. x^2 - 6 + 9 = 0

For which pair of functions is (gof)(a)=|a|-2?