SOLUTION: I am needing help with the second part of this problem. I solved the first part(I think I solved it correctly), but am unsure on how to solve the 2nd part. Can someone please ass

Question 291873: I am needing help with the second part of this problem. I solved the first part(I think I solved it correctly), but am unsure on how to solve the 2nd part. Can someone please assist me.
The CDC records predict the number of people infected with the HIV virus in Africa will increase from 2.5 million in 1980 to 7.1 million in 2020.
a)Using the form f(t)=y0b^t to model the data, where t=0 corresponds to 1980
b) What is the projected infected in 2010? 2015?
Here is what I have for part A:
Rate = 2.5 when t = 0 f(t) = 2.5b^t
F(40) = 7.1
2.5b^40 = 40 (divide each side by 2.5)
B^40 = 40 ^1/40
2.5
B = 40 ^1/40 ~ .93303
2.5
Function = f(t) = 2.5(.93303^t)

I am struggling with part b.
Thanks,
Holly
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
How does this fit in the finance category?
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