The height (in meters) of a projectile shot vertically upward from a point 3 m above ground level with an initial velocity of 25.5 m/s is h = 3 + 25.5t − 4.9t2 after t seconds. (Round your answers to two decimal places.) When does it hit the ground? With what velocity does it hit the ground?
Suppose that a population of bacteria triples every hour and starts with 200 bacteria. Find an expression for the number n of bacteria after t hours. Use it to extimate the rate of growth of the bacteria population after 3.5 hours.

Assume that a local bank sells two services, checking accounts and atm card services. the bank’s only two customers are mr. donethat and ms. beenthere. mr. donethat is willing to pay $8 a month for the bank to service his checking account and $2 a month for unlimited use of his atm card. ms. beenthere is willing to pay only $5 for a checking account, but is willing to pay $9 for unlimited use of her atm card. assume that the bank can provide each of these services at zero marginal cost.refer to scenario 17-5. if the bank is unable to use tying, what is the profit-maximizing price to charge for a checking account