Question

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

Answer 1

The answer is f(x)= - 1/4*x +10

Answer 2

Answer:

$f(x)= -\frac{1}{4} x+10$

Step-by-step explanation:dd

A student is running a 10-kilometer race. He runs 1 kilometer every 4 minutes.

LEt x be the number of minutes and f(x) be the distance traveled

Initial distance is 10 kilometer

Constant speed is $\frac{1}{4}$

Distance covered on running is $\frac{1}{4}x$

To find distance from finish line , we subtract the distance covered from initial kilometers

$f(x)= -\frac{1}{4} x+10$