The equilateral triangle and the rectangle have the same perimeter.

A) x+x+2x-3+2x-3=3(x+5)

B) The perimeters are 36

Step-by-step explanation:

x+x+2x-3+2x-3=3(x+5)

6x-6=3x+15

6x-3x=15+6

3x=21

x=7

TRIANGLE: 3(x+5)=3(7+5)=3(12)=36

RECTANGLE: x+x+2x-3+2x-3=7+7+14-3+14-3=36

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