Help answering these math questions

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

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.

Find the maximum value of p= 4x + 5y subject to the following constraints :