Answer:
f(20) = 10
Step-by-step explanation:
You plug 20 in for x
f(20) = 4/5(20) -6
f(20) = 16 - 6
f(20) = -149/25
f(x) = 4/5x - 6, f(20)
f(20) = 4/5(20) - 6
= 1/5 × 5 - 6
= 1/25 - 6
= 1 - 25 × 6/25
= 1 - 150/25
