Please help answer 3 questions

Which of the binomials below is a factor of this trinominal? x^2-13+30

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

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.