The two solids are similar, and the ratio between the lengths of their edges is 2:9. What is the ratio of their surface areas?

A. 8:36
B. 4:18
C. 4:81
D. 64:729

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