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.

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?