The circled answer is exponential growth because 365/14 is an exponent greater than one. The reason you use this exponent is because every 14 days the interest is compounded (per 14 days). The reason 365 is on top is because the problem asks to go for a year. So if it went for 14 days you'd get 14/14 and it would be compounded once. Exponentially growing. 1.3 is used because you multiply by 1 to keep the amount and then the .3 is to increase it by 30%. So it increases 130% each time.
Answers 1 and 2 are exponential decay.
3 and 4 are both exponential growth.
If I didn't clear up something just comment and I'll try to respond.
