Please help me on this problem

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.

If a || b and e || f , what if the value of y ?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?