SOLUTION: After t years, the annual sales in hundreds of thousands of units of a product q is given by {{{q=(1/2)^0.8^(t)}}} a) find the annual sales of the product after 7 years?

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: After t years, the annual sales in hundreds of thousands of units of a product q is given by {{{q=(1/2)^0.8^(t)}}} a) find the annual sales of the product after 7 years?       Log On


   

Question 877760: After t years, the annual sales in hundreds of thousands of units of a product q is given by q=%281%2F2%29%5E0.8%5E%28t%29
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 josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
That seems like a difficult form.

log%28%28q%29%29=log%28%28%281%2F2%29%5E0.8%5Et%29%29
log%28%28q%29%29=0.8%5Et%2Alog%28%281%2F2%29%29
log%28%28log%28%28q%29%29%29%29=log%28%28log%28%281%2F2%29%290.8%5Et%29%29

This should now be more adequate to use.