SOLUTION: The data in Table 7 shows that the percentage of female cigarette smokers in the U.S. declined from 22.1% in 1997 to 18.0% in 2006. f = -0.47t + 22.19 B) Estimate the first

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The data in Table 7 shows that the percentage of female cigarette smokers in the U.S. declined from 22.1% in 1997 to 18.0% in 2006. f = -0.47t + 22.19 B) Estimate the first       Log On


   

Question 487058: The data in Table 7 shows that the percentage of female cigarette smokers in the U.S. declined from 22.1% in 1997 to 18.0% in 2006.
f = -0.47t + 22.19
B) Estimate the first year in which the percentage of female smokers is less than 10%.
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
-0.47t+%2B+22.19%3C10
-0.47t+%3C10-22.19
-0.47t+%3C-12.19
t%3E%28-12.19%29%2F%28-0.47%29
t%3E25.9
the first year in which the percentage of female smokers is less than 10% is 1997%2B26=2023