Question

A student is running a 3-kilometer race. He runs 1 kilometer every 2 minutes. Select the function that describes his distance from the finish line after x minutes. (1 point) Select one: a. f(x) = −1 over 3x + 2 b. f(x) = −1 over 2x + 3 c. f(x) = 1 over 2x + 3 d. f(x) = 1 over 3x + 2

Answer 1

(1/2)x + 3

Explanation:

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Answer 2

Total distance: d = 3 km

Minutes run: x

Distance run = (1 km / 2 minutes) * x = (1/2)x

Distance from the finish line = total distance - ditance run = 3 - (1/2)x =

= - (1/2)x + 3

Answer - (1/2)x + 3