Sven is trying to find the maximum amount of time he can spend practicing the five scales of piano music
he is supposed to be working on. He has 80 minutes to practice piano and would like to spend at least 45
minutes playing songs instead of practicing scales. So, Sven sets up the following inequality, where t is
the number of minutes he spends on each scale, and solves it.
80-5t < 45
-5t -35
t≥7