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5.52

Step-by-step explanation:

First you divide 8.28 by 18 to find the rate or in this case the cost per stamp.

8.28/18=0.46

Then multiply 0.46*12.

0.46*12= 5.52

Hope this helps :)

ok

step-by-step explanation:

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