In a video game, you score p game points and b triple bonus points. an expression for your score is p+3b. what is your score when you earn 245 game points and 20 triple bonus points?

245+3(20)
245+60
So the final score would be 305

Total = Principal * e^(rate*years)
Total = 100 * 2.718281828^.08*15
Total = 100 * 2.718281828^1.2
Total = 100 * 3.3201169221
Total = 332.01

Source:
Continuously compounded interest formulas:
http://www.1728.org/rate2.htm
Calculator
http://www.1728.org/compint.htm