Pretone anti-freeze has 18% alcohol in it. Pleak anti-freeze has 10% alcohol in it. How many liters of each should be mixed to get 20 liters of a mixture that is 15% alcohol?

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

apex answer is: true.