Posted by Anonymous on Wednesday, February 6, 2013 at 11:03pm.
Median family income in country x between 1990 and 1999 can be modeled by f(x)=1144.7(x1990)+35,834 where x is the year. Determine the median income was $42,303.
I did it this way don't know if it's right
f(x)=1144.7(x1990)+35,834
42,30335,834 = 1144.7  (x1990) + 35,834
6469. 1144 7  (x1990). 35,834
.177=x1990
The median income was $1144.7 every year
Thanks for all your help:)

college algebra  Henry, Friday, February 8, 2013 at 4:56pm
F(x) = 1144.7(x1990) + 35,834 = $42303.
1144.7x for y  2277953 + 35834 = 42303
1144.7x  2242119 = 42303
1144.7x = 2284422
X = 1995.65 or 1996.
The Median income was $42,303 for year
1996.