Pls help me I’ll brainlest for the right answer pls help I’m failing math grades close today

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 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 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

∆red ≅ ∆ by rule will give brainiest if possible

Which system of linear inequalities is represented by the graph?