SOLUTION: Suppose that the function P=13+45 ln x. Use this model to determine in how many years (to two decimal places) it will take for the percent of spam to reach 95% provided that law e

Question 159007: Suppose that the function P=13+45 ln x.
Use this model to determine in how many years (to two decimal places) it will take for the percent of spam to reach 95% provided that law enforcement regarding spammers does not change.
I have it this far and cannot remember where to go from here. I need help!
95=13+45ln x
-13=-13
82=45ln x / 45=45
1.82=ln x
? ^ 1.82
What is the ? value
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Suppose that the function P=13+45 ln x.
Use this model to determine in how many years (to two decimal places) it will take for the percent of spam to reach 95%
:
13 + 45*ln(x) = 95
:
45*ln(x) = 95 - 13
:
45*ln(x) = 82
:
ln(x) =
ln(x) = 1.822; which is what you got
:
Using a calc, find e^x, enter 1.822
x = 6.19 years
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