Answer: -16
Step-by-step explanation:
f(g(x)) = 2(4(-2)) + 5
f(g(x)) = 2(-8) + 5
f(g(x)) = -16 + 5
f(g(x)) = -11
f(0) = 2(0) + 5
f(0) = 5
f(g(x)) - f(0) = -11 - 5
f(g(x)) - f(0) = -16
Step-by-step explanation:
2x + x + 57 = 90
3x = 33
x = 11
m1 = 2 × 11 = 22°
m2 = 11 + 57 = 68°
check: 22 + 68 = 90