I i rlly don't know this gets harder tho

Sorry guys but as you have a small brain

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15