Andrewandrew can paint the neighbor's house 4 times as fast as bailey. the year andrewandrew and baileybailey worked together, it took them 9 days. how long would it take each to paint the house?

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.