Twenty years ago a small town in Texas had a population of 10,000. The population has increased 8% each year since then. What equation would be used to solve this population growth problem? a. P = 20 10,000)^.08 b. P = 10,000(8)^20 c. P = 10,000(20)^1.08 d. P = 10,000(1.08)^20