Answer:
f(x) = 4x
Step-by-step explanation:
Verification:f(2) = 4 x 2 = 8
f(3) = 4 x 3= 12
f(4) = 4x x 4 = 16
20 x 3=60
if she ran 3 times as far as clair and ran 20 miles then you use multipication.
1.50