Why, in many situations, must integer programming be used instead of linear programming that allows non-integer values?

The question is in the screenshot and the answers are listed below: A. 700 small copiers and 1,050 large copiers. B. 1,025 small copiers and 825 large copiers. C. 975 small copiers and 875 large copiers. D. 900 small copiers and 925 large copiers.

An investor has $621,000 to invest in bonds.  Bond A yields an average of 8% and the bond B yields 7%.  The investor requires that at least 5 times as much money be invested in bond A as in bond B.  You must invest in these bonds to maximize his return.  This can be set up as a linear programming problem.  Introduce the decision variables: x= dollars invested in bond Ay= dollars invested in bond B Compute x+y. $                       .  Round to the nearest cent.   Investor Matt has $152,000 to invest in bonds.  Bond A yields an average of 9.2% and the bond B yields 8.4%.  Matt requires that at least 4 times as much money be invested in bond A as in bond B.  You must invest in these bonds to maximize his return.  What is the maximum return? $                       per year.  Round to the nearest cent.   Investor Dan has $607,000 to invest in bonds.  Bond A yields an average of 8.5% and the bond B yields 8.4%.  Dan requires that at least 4 times as much money be invested in bond A as in…

Describe an application of linear programming you might find useful where you work, in your personal life, or in a course you are taking.  Be specific with your answers. This is an opportunity for you to showcase what you have learned about linear programming and your ability to apply your knowledge to real-world applications.