The table below shows the regression output with sales as the dependent variable and advertising expenditure ($) and time period, t as the independent variables. What is the estimated sales when the advertisingexpenditureis $1000 and the time period is 5?

Coefficientsandard Err t Stat P-value Intercept 31232.5 46332.7 0.67409 0.56972 Advertising exp -0.06504 1.21555 -0.05351 0.96219 t 18120.3 10091.3 1.79565 0.21439