lAlleh7Paleyta3ndrig
lAlleh7Paleyta3ndrig lAlleh7Paleyta3ndrig
  • 23-01-2016
  • Biology
contestada

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.

Respuesta :

MichaelLiu
MichaelLiu MichaelLiu
  • 23-01-2016
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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