Solve for f.
f + 15 < 6 or f + 12 > 16
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Step-by-step explanation:

1. f+15<6

= f<6-15

f < -9

2. f+12 >16

f >16-12

f > 4

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