What is the measure of def 78 12

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

You are riding your bike and notice the square sign above. you mentally draw a straight line from point a to c. describe the angle relationship between dca and bca