How do I find the measure of an x
in a angle figure

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.