$6-19$ Porter Investments needs to develop an investment portfolio for Mrs$.$ Singh from the following list of

possible investments:

Mrs$.$ Singh has a total of $$60,000$ to invest. The following conditions must be met: $(1)$ If investment $F$

is chosen, then investment $G$ must also be part of the portfolio, $(2)$ at least four investments should be

chosen, and $(3)$ of investment A and B$,$ exactly one must be included. What stocks should be

included in Mrs$.$ Singh's portfolio?

a$.$ What are your decision variables $($x$)?$ State below.

b$.$ Write down your objective function $($include min$/$max with the equation$)$ and constraints below, include descriptions$/$explanations$/$calculations on the right. Delete$/$add rows as needed.