(3) Explain how you can tell that the point (5, 13) is a solution to the system shown without formally solving the system.
y = 4x - 7
2x + y = 23

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2

if you need just tell me and i will come to the rescue.

step-by-step explanation: