Exhibit 4.3:The following question is based on this problem and accompanying Solver sensitivity report.

The Byte computer company produces two models of computers, Plain and Fancy. It wants to plan how many computers to produce next month to maximize profits. Producing these computers requires wiring, assembly and inspection time. Each computer produces a certain level of profits but faces only a limited demand. There are also a limited number of wiring, assembly and inspection hours available in each month. The data for this problem is summarized in the following table.

LetX1= Number of Plain computers to produce

X2= Number of Fancy computers to produce

The LP model for the problem is

MAX:35X1 + 40 X2

Subject to:.4 X1 + .5 X2 50 (wiring hours)

.5 X1 + .4 X2 50 (assembly hours)

.2 X1 + .2 X2 22 (inspection hours)

X1 80 (Plain computers demand)

X2 90 (Fancy computers demand)

X1, X2 0

Question: If you have two additional hours in the right hand side of the wiring department, what will be the value of the objective function equal to?

a. cannot tell because there is not enough information

b. 4150

c. 3910

d. 4250