you just need t where
-0.075t + 3.85 < 3.5
0.075t > 0.35
t > 4.67
So, any year after 1935
World Records in the 1500-m Run. The formula R = -0.075t + 3.85 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.5 min.
{ Y l Y > 1930 } ?
1 answer
1 answer