just$-$in$-$time $($JIT$)$An earlier and alternate term for lean operation, in which a system implicioperates with minimum inventory and waste.

Assume your company's sales $"Y"$ are a function of advertising $"x",$ population in

the neighborhood $"Z",$ and average income in the neighborhood $"V".$ Please forecast

your company's sales based on the following information and multivariate regression

equation:

$Y=$$$550,000+8\mathrm{.}15x+4\mathrm{.}22Z-2\mathrm{.}78V$

Advertising expense $$40,000$ Population is $30,000$ Average income is $$37,000$