Answer:
look at the picture i have sent
If a is the number of events, then a = 1. Plugging in 1 for a in the equation

, you get

.
Total cost is $9.
Answer:
37
Step-by-step explanation:
??!?!?!?!?!?! don't know what'cha mean
Answer:
c
Step-by-step explanation:
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Answer:
Interest would be $15 every 3 years
Step-by-step explanation:
Interest = Principal x Rate x Time
Interest = 100 x 5% x 3
Interest = 5 x 3
Interest = 15