Marcus is rewriting a polynomial by combining like terms. Which terms does he still need to combine to finish rewriting the polynomial? -3mn - 4n^4+ 2mn - 6n-5mn^3- 6m^3n

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.