A woman throws her keys straight
up at 8.49 m/s. Her friend catches
them 2.89 m higher. How long were
the keys in the air?

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

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

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?