PLEASE HELP!! :)

A student is running a 10-kilometer race. He runs 1 kilometer every 4 minutes. Select the function that describes his distance from the finish line after x minutes.

f(x) = 1 over 4x + 4
f(x) = − 1 over 10x + 4
f(x) = 1 over 10x + 10
f(x) = − 1 over 4x + 10

Question

PLEASE HELP!! :)

A student is running a 10-kilometer race. He runs 1 kilometer every 4 minutes. Select the function that describes his distance from the finish line after x minutes.

 f(x) = 1 over 4x + 4
 f(x) = − 1 over 10x + 4
 f(x) = 1 over 10x + 10
 f(x) = − 1 over 4x + 10

anonymous · Answer

the answer is f(x)=-1 over 4x+10

anonymous · Answer

ok, do you mind explaining? I just like to know how to do it so i can get it right in the future.

anonymous · Answer

you don't have to, but if you don't mind :)