Finding the optimal age using regression estimates

[harji22]

Hi, I need to find the optimal age of an individual in my regression, using the coefficients from my regression. How would i go about doing this and which calculations or formula would i use? I have included the regression results below.

Dependent Variable: LNFEE
Method: Least Squares
Date: 03/19/12 Time: 12:12
Sample: 1 273
Included observations: 273


Variable Coefficient Std. Error t-Statistic Prob.


AGE 0.749726 0.142210 5.271947 0.0000
AGESQ -0.017710 0.002832 -6.254406 0.0000
GOALS 0.000105 0.003072 1.734260 0.0097
EXP 0.005644 0.001444 3.908922 0.0001
GRATIO 0.956899 0.618166 1.947964 0.0028
INT 0.546824 0.121470 4.501713 0.0000
YELLOW -0.010252 0.006538 -2.198061 0.0281
CARDS 2.355419 1.065482 2.210661 0.0279
AVGSELL 8.18E-06 3.04E-06 2.692977 0.0075
TOP6 0.687501 0.135933 5.057649 0.0000
AVGBUY 2.23E-05 4.50E-06 4.955318 0.0000
ENGLISH 0.388930 0.114308 3.402476 0.0008
C -9.130369 1.728677 -5.281710 0.0000


R-squared 0.580321 Mean dependent var 1.341045
Adjusted R-squared 0.560952 S.D. dependent var 1.122898
S.E. of regression 0.744041 Akaike info criterion 2.293006
Sum squared resid 143.9351 Schwarz criterion 2.464885
Log likelihood -299.9953 Hannan-Quinn criter. 2.362002
F-statistic 29.96015 Durbin-Watson stat 1.890205
Prob(F-statistic) 0.000000