I need help solving this , If the formula R= -0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.8 seconds or less. I am clueless what to do been on this for an hour.
R=timing,
t=years after 1925, for example
in 1950 t=25, and so on.
The problem you need to solve is
R=48.8 s
and need to solve for t.
48.8=-0.037t+50.1
Solution : t=35.1
This means by 1925+35.1=1961 (round up), world records will be 48.8 seconds or less.