Problem 18 (12pts ) 18. The following formulas each describe the size of an ani- mal population, P, in t years since the start of the study. Describe the growth of each population in words. (a) P = 200(1.028) (c) P = 1000(0.89) (e) P = 2000 - 300t ANWER & WORK:Examples and Exercises Directions. For problems 17, simplify. For problem 8, solve for as. You may need extra paper for your calculations. 1 (xy3)2 5 21i/I+M"1 I grog-5 I 1+2M2 2 _(AB)4 6. 313/t3+7(t9)1/3 I [FIB2 3 2 3 ugh1 7. 2km 4:14:97: ' (15/2 km 8. 81m = 3 4. 2510;? + b) 2