9. A constraints in an LP model restricts A. Value of objective function C. Value of the decision variable B. Use of the available Resource D. A& B E. all are possible answer Consider the following problem to answer question number 10, 11 &12. Max 3x1 + 2x2 Subject to: x1 + x2 ≤ 80 2x1 + x2 ≤ 100 x1 ≤ 40 X1,x2 ≥ 0

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in