Solve the following modifications of the capital budgeting model in Figure 6.1. (Solve each part independently of the others.) a. Suppose that at most two of projects 1 through 5 can be selected.  b....

Solve the following modifications of the capital budgeting model in Figure 6.1. (Solve each part independently of the others.)

a. Suppose that at most two of projects 1 through 5 can be selected.

 b. Suppose that if investment 1 is selected, then investment 3 must also be selected.

c. Suppose that at least one of investments 6 and 7 must be selected.

d. Suppose that investment 2 can be selected only if both investments 1 and 3 are selected.