Astudent 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.

If the student runs 1 kilometer in 4 minutes,
then in 1 minute, he will run 1/4 kilometer.

Thus in x minutes, he will run x * 1/4 kilometers.

He starts out with 10 kilometers ahead of him, but every x minutes, he will run x/4 kilometers and so the 10 kilometers will get less and less.

f(x) = 10 - x/4
where 0 <= x <=40

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Idont know but good luck; )