of this development, the planners have estimated that Glen Cove's population (in thousands) t years from now will be given by P(t) = 15tz + 120t + 60 to + 8t + 32 (a) Find the rate (in thousands of people/year) at which Glen Cove's population is changing with respect to time. P'(t) = (b) What will the population be after 10 years? (Round your answer to the nearest person.) people At what rate (in people/year) will the population be increasing when t = 10? (Round your answer to the nearest integer.) people/year