Question

Please help me with this.

The finishing time for a runner completing the 200-meter dash is affected by the tail-wind speed, s. The change, t, in a runner's performance is modeled by the function shown below:

t= 0.0119s^2 - 0.308s - 0.0003

Predict the change in a runner's finishing time with a wind speed of 3 meters/second. Note: A negative answer means the runner finishes with a lower time.

Round to the nearest hundredth.

Answer 1

That is interesting, a little tailwind helps but a lot hurts. also zero has an effect? why?
anyway
if s = 3
t = .0119 *9 - .308 *3 - .0003
t = +.1071 - .924 - .0003
t = -.8172 seconds (wow, a lot)
= -.82 rounded

Answer 2

Thank you, Damon. Now I can do my other problems on my own :)

Answer 3

suck a stick