3. Here are the graphs of two piecewise-linear functions: f (1:) shown in solid red, and 9(33), shown in dotted blue. I . . '7 I + '2'." 96X) : f(X) (a) (6 points) Let A(:c) = f(m)g(x]. Find 243(4). (b) (6 points) Let 8(3) : f(g(:1:)). Find 3"(5). (c) (6 points) Let C(I) = g(4)f(3:) + 19(0). Find 0"(2)