Please Help if not the right answer you will get reported if u are wasting this question for points

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)