Max $63E+95S+135D,$

$s.t.$

$,1E+1S+1D,260$ Fan motors

$,EE+2S+4D,300$ Cooling coils

$,BE+12S+14D,2,500$ Manufacturing time

$,$

The computer solution is shown below.

$($a$)$ Identify the range of optimality for each objective function coefficient. $($If there is no upper or lower limit$,$ enter NO LIMIT.$)$

E

to

$5$

to

$x$

$0$

$($b$)$

Suppose the orofit for the economy

$E$ units

profit $$ inits

constraint $1$

constraint $2$

constraint $3$