Which of the following is a valid objective function?

Group of answer choices

Min 3X1 + 2.7X2 3.9X3 0

Min 2X1 + 5X2 X3

Max X1 + 2X2 3.9X3 = -34

Max 7X1 + 2X2 X3 3.9X4 25

2-

The main trade-off in aggregate planning is between:

Group of answer choices

Inventory and capacity costs

Setup and order costs

Holding and shortage costs

Hiring and firing costs

Because an ERP system is integrated, the following is true:

Group of answer choices

Uses one single database

All of its databases are visible

Each module has its own database

It keeps but integrates the legacy databases