Which expression would be easier to simplify if you used the commutative property to change the order of the numbers? A. 30 + (-12) + 70
B. -10 + (-20) + 1/2
C. 60 +40 + (-25)

D

Step-by-step explanation:

I DID IT ON EDGE

is there a picture

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