posted by Anonymous .
The formula R = -0.075t+3.85 can be used to predict the world record in the 1500 meter run, t years after 1930. Determine an inequality that world record will be less than 2.8 minutes.
Solve for t.
If we ignore the total silliness of the question
-0.075t+3.85 < 2.8
t > 14