A ball is dropped from a treetop 256 feet above the ground . How long does it take to hit the ground? (S=16t^2)
A) 4 seconds
B) 16 seconds
C) 8 seconds

The heaviest 16% of all men in weight weigh more than how many pounds ?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2