Is there a way you can send me a picture of what your copying your answer from ?
There are 3 feet in 1 yard so each foot is 1/3
F(x) = 5x
for f(7) you replace x with 7 so it will be : f(7) = 5(7) = 35
Well if he can walk 4 miles in one hour, just multiply 4 by 3 to get 12. Hope this helps! Make sure to mark me brainlest(losing ranks like crazy for some reason)
