1 the population of a town t years from 2000 is pt 4500 -

Question

1) The population of a town 't' years from 2000 is P(t) = 4500 - 15t + 4t².  Find the rate of population growth in 2012.

2) You are in a race.  The distance you are from the starting gate at time t seconds is  h(t) = 2t³ + 5t   feet: When will your acceleration equal to 144 ft/sec²

3) Find the domain and range of:   f(x) = √25-x²