pls help, pls use desmos for the graph and pls help me explain and show the work on these questions, thank u

19. The population, P, of the city Hazelton has grown according to the mathematical model: P = 32 000(1.09), where t is the number of years since 1990. a) What do the numbers 32 0000 and 1.09 represent? b) What is the population after 4 years? c) If this trend continues, in what year will the population reach 100 000? 20. Webber has to build a storage box with a volume of 15 cubic feet. For parts, (a) and (b), round your answers to two (2) decimal places. a. Determine the dimensions of the box with minimum surface area. b. Determine the surface area of the box you found in part (a). c. Suppose Webber has 5 m of plywood. Is this enough to build the box? (1 foot = 0.3048 m)