SOLUTION: 5. Use the Formula R = 6e12.77x, where x is the blood alcohol concentration and R, given in percent, is the risk of having a car accident. Solve: What is blood alcohol c

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: 5. Use the Formula R = 6e12.77x, where x is the blood alcohol concentration and R, given in percent, is the risk of having a car accident. Solve: What is blood alcohol c      Log On


   

Question 409520: 5. Use the Formula R = 6e12.77x, where x is the blood alcohol
concentration and R, given in percent, is the risk of having a car accident.
Solve: What is blood alcohol concentration corresponds to a 25% risk of an accident?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
R+=+6%2Ae%5E%2812.77x%29
25+=+6%2Ae%5E%2812.77x%29
e%5E%2812.77x%29+=+4.1667
Take the natural log of both sides
12.77x+=+ln%284.1667%29
x+=1.42711%2F12.77
x+=+.111755