SOLUTION: Equation is double checked... exactly as written in the work book: After t years, the annual sales in hundreds of thousands of units of a product q is given by {{{q=(1/2)^(0.8)

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Equation is double checked... exactly as written in the work book: After t years, the annual sales in hundreds of thousands of units of a product q is given by {{{q=(1/2)^(0.8)      Log On


   

Question 878591: Equation is double checked... exactly as written in the work book:
After t years, the annual sales in hundreds of thousands of units of a product q is given by q=%281%2F2%29%5E%280.8%29%5E%28t%29 q=(1/2)^(0.8)^(t)

a) find the annual sales of the product after 7 years?
b) After how many years will the annual sales be 64 171 units?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Oops, my mistake. I had 8 and not 0.8 as the exponent.
q%287%29=100000%2A%281%2F2%29%5E%28%280.8%29%5E7%29=86471
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.
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q%281%29=100000%2A%281%2F2%29%5E%28%280.8%29%5E1%29=57435
q%282%29=100000%2A%281%2F2%29%5E%28%280.8%29%5E2%29=64172
2 years