Acar that travels 20 miles in 1/2 hour at constant speed is traveling at the same speed as a a car that travels 30 miles in 3/4 hour at a constant speed

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.