Please finish as soon as possible! Thank you so much !!

Will mark brainliest with 20 points! the table shows how far object 1 traveled as a function of time. *time (seconds) - 2 4 6 8 *distance traveled (feet) - 18 36 54 72 the equation shows how far object 2 traveled in feet as a function of time in minutes. *f(x) = 10x which object traveled at a faster speed? justify your response.

How do i do this? i don’t understand

If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).