Using equation (2.4), what is the demand equation as a function ofPsif the price of other pastas ( Po) is $3, the individual's income ( Y ) in thousands is $25, and tastes ( Z ) are represented by 20? What happens if the individual's income increases to $40?

This is the equation 2.4 that was provided from the book: Qd=500-10Ps+5Po+20Y+40Z. However, these numbers were for linear spaghetti demand function example. The 500 was the intercept, and the slope value for the income variable Y was 20.