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. (1 point)

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

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. (1 point)

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

Aqual · Answer

ok, so we know that we have 1/4 of a kilometer a min.

justus · Answer

we could start off by eliminating the option C

justus · Answer

as well as option A

justus · Answer

because in the equation we need both numbers because they indicate the number of kilometers and minutes.

justus · Answer

$\color{#0cbb34}{\text{Originally Posted by}}$ @Aqual
ok, so we know that we have 1/4 of a kilometer a min.
$\color{#0cbb34}{\text{End of Quote}}$
now you could use this piece of information to find if it's going to be B or D

fhbesbfuwqru3WO · Answer

i think d

justus · Answer

You are correct. :)

fhbesbfuwqru3WO · Answer

thank you!!

justus · Answer

thank you for being understanding and cooperating with me.