Question 1158340
let f(x) = 3x^2 + 2x -1 and g(x) = 5x + 7  find (fog)(-2)

HELP!!!!!
<pre>Follow the instructions by TUTOR @IKLEYN.
g(- 2) = 5(- 2) + 7 = - 10 + 7 = - 3
So, you'll get {{{highlight_green(matrix(1,9, f(g(- 2)), "=", f(- 3), "=", 3(- 3)^2 + 2(- 3) - 1, "=", 3(9) - 6 - 1, "=", 20))}}}.