What rule can you use to find the sum of a positive integer and a negative integer using counters?

i think the answer is b.

step-by-step explanation:

not 100% sure though.

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

b. f(x) = –√x + 3this is the correct answer