Simplify: (2x2 − 9x + 3) + (−7x2 + 4x − 2) (5 points) −5x2 − 13x + 1 −5x2 + 5x − 1 9x2 − 4x + 1 −5x2 − 5x + 1

Use set buikder notation to represent the following set: {, -2, -1, 0}

Look at attachment. has all info needed. need

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.