A student is running a 3-kilometer race. He runs 1 kilometer every 2 minutes. Select the function that describes his distance from the finish line after x minutes.

Question

f of x equals negative one third x plus 2
f of x equals negative one half x plus 3
f of x equals one half x plus 3
f of x equals one third x plus 2

Answer 1

f(x) = 1/2x + 3

This function describes the student's distance from the finish line after x minutes, as given that he runs 1 kilometer every 2 minutes.