What si the percent of change from 500 to 80

84% decrease

Step-by-step explanation:

500-80 = 420

420/500= 0.84

0.84 x 100 = 84 percent decrease

btw you divide 420 by 500 and not by 80 because you are going FROM 500 TO 80.

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