Part I: True/False Items Instruction: Read the questions carefully and if the statement is correct write true otherwise false. Write your answer on the space provided (1 point each) Linear equation is a constant, or a constant times one variable to the first power. All scalar matrixes are an identity matrix. The product of matrices A and B, (AB,) is defined only if number column of A is the same as number of rows of B. All square matrix has inverse Any Mathematical statement which is expressed by equal sign is called linear equation. Part II: Multiple choice Items Instruction: Read the questions and choose the right answer from the given choices (alternatives) and write the letter of your choice on the space provided at the separate answer sheet. (1 point each) Which one of the following is/are wrong about slop of linear equation The slop of vertical line is undefined The slop of a line that is parallel to the X- axis is zero The larger the slope, the steeper the line slope is estimated to vary in accordance to the independent variable none Suppose the fixed cost for producing product x is estimated to be Birr 10,000. After setup, it costs Birr 10 per x produced. If the total cost is represented by y identify the true statement: The graph of the equation will go down towards the right If x is zero, y will also be zero One unit increase in product x will result a 10 birr change on total cost There is inverse relationship between x and y As salse change from birr 300 to birr 600, selling expense changes from from birr 250 to birr 400. Assume that the given data has a linear relationship between salse and selling expense, the slop wil be: 0.5 -0.5 4 -4 none Use the following information for Q4-6. A small home business is set up with an investment of Birr 100,000 for equipment. The business manufactures a product at a cost of Birr 60 per unit and sells for Birr 140. The break even quantity is: 1250 1000 1666 none The break even revenue is: 175,000 200,000 250,000 none How many should the level of production be in order to realize a profit of 20,000 1500 2000 2500 none Let A = and B = then what is A-B? A. C. B. D. E.None Suppose a retail business sells its commodities at a margin of 25% and assume that all the items purchased are sold. Moreover the company uses a 5% commission as selling expense and birr 12,000 as a fixed cost. What is breakeven point revenue? 60,000 D) 75,000 50,000 E) 40,000 5,000 The breakeven point is? A) Is revenue equals with variable costs. B) Is a point where a company generates large profits. C) The total revenue equals with total cost. D) The total revenue equals with fixed cost. E) All of the above For a certain item the cost function is given by C(x) = 15x + 1500 while the revenue function is R(x) = 35x. Which of the following is the break even sales volume? A. 75 B) 2625 C) 2500 D) 1500 If a line that has a slope of 10 and a y-intercept of 20 has the equation of the line become-------------: Y=10X+15 C) Y=10x +20 Y=20X+10 D) Y=10x +10 From the following equation one is not correct. TC=MQ+FC C) TR=PQ VC=MQ D)
