X+ 3y - 2z - w = 5 4x + y + 2z + 2w = 3 -3x -y + z -5w = -24 x - y - 3z - 4w = -8

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.