What is the factorization of the trinomial below/ 3x^2-21x+30?

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x