Hi Gigi!
I know it's 5 days late, and I know I'm not one of the people you asked, but I do have a few answers that I hope can still help you and other people that still need these answers.
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1. Answer:
Based on the graph, it is predicted that it will take more than 3 years for the population to be greater than 500.2. I'm not sure, sorry :(
3. Answer:
g(x)=-2(1.5)^x
4. Answer: The population in 2016.
5. Answer: -93.75
6. Answer: When they bought their baseball cards, Maysa's card was worth $4 more than Ethan's card.
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I hope this helps you, baii <3
simplified product: 625
product: 5x5x5x5x5