Aball is thrown from a height of 80 feet with an initial downward velocity of 4/fts . the ball's height h (in feet) after t seconds is given by the following.

h−80−4t-16t^2

how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth.

Movie $5.50 soda $1.75 popcorn $2.25 candy bar $1.10 jeffrey left home with $20 in his wallet. he had a quick lunch that cost $8.47 and went to the movie theater. which of these activities can jeffrey do? a) go to movie and take two friends b) go to movie and have a soda, a popcorn and a candy bar c) go to movie, take a friend, and have a popcorn to share d) go to a movie, have 2 popcorns, 2 sodas, and 2 candy bars eliminate

What is x and y intercepts for y=x+7

What are the excluded values? m+5/mn+3m