I don’t know how to type exponents our on here, so whenever I put a ^ before a number, it’s an exponent :) ex: ^3 (the exponents 3)

the question:
Factor.
9d^3 - 12a^2

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.