SOLUTION: Hi! I need help to get the same answer as in the sheet. http://www.vusd.org/webpages/rbrown/files/precalc%20review%203%20answers.pdf My question is number 26. Thank you!

Question 368248: Hi! I need help to get the same answer as in the sheet.
http://www.vusd.org/webpages/rbrown/files/precalc%20review%203%20answers.pdf
My question is number 26.
Thank you!
Found 2 solutions by solver91311, robertb:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Share the answer you did get so that I can figure out where you went wrong.

John

My calculator said it, I believe it, that settles it

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
The equation is . We're given P(t) = 7, and have to solve for t.
,
,
,
.
t = 27.9 years. Thus the population becomes 7 million at 1980 + 27.9 = 2007.9, which is still part of 2007 (around late October? haha)
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