A computer center has two color printers. Students arrive at a rate of one every 8 ± 2 minutes to use the color printer. They can be interrupted by professors, who arrive at a rate of one every 12 ± 2 minutes. There is one systems analyst who can interrupt anyone, but students are interrupted before professors. The systems analyst spends 6±4 minutes on the color printer and then returns in 20±5 minutes. Professors and students spend 4+2 minutes on the color printer. If a person is interrupted, that person joins the head of the queue and resumes service as soon as possible. a. For such case, explain what kind of queuing rule is being applied! b. If you were asked to improve such case, describe your objectives and explain what performance-measures would you use? c. Following point 1.b.. explain your plan to improve such case.

One of the key tasks in metropolitan area transportation planning is to estimate the total number of trips made by households during a typical day. The dependent variable is the number of trips made by a household per day, known as the trip generation rate. One of the most important determinants of variations in household trip generation rates is household income. Consider a hypothetical city, values of the trip generation rates and household income are listed in the following table.    (a) Find the regression coefficients (the intercept and the slope coefficients). Interpret the meaning of the slope coefficient.(b) Write out the regression line formula.(c) Calculate the coefficient of determination for this problem.

In your own words describe when you could choose to use each method for Salvini system equations graphing substitution and elimination

2. Explain when each of these three Methods should be used to solve systems of equations and some advantages/disadvantages for utilizing each: Graphical, Substitution, Elimination

The concepts of linear and non-linear systems are a difficult topic. What concepts/terms (only the names) does one need to grasp in order to understand linear and non-linear systems? Give an example of the simplest linear system and non-linear system imaginable?

The table below shows the projected values (in millions of dollars) of hardback college textbooks sold in the United States for the years 2007 to 2009. Year Value 2007 4412 C = 2008 4471 2009 4556 (a) Create a system of linear equations for the data to fit the curve y = at² + bt + c, where t is the year and t = 7 corresponds to 2007, and y is the value of the textbooks. = 4412 = 4471 = 4556 (b) Use Cramer's Rule to solve your system. a = b =

Find the solution to the system of linear equations represented by the two model equationsobtained from the spreadsheet in the picture.    What does the solution to this system of linear equations represent?  What other factors might need to be taken into account to provide a more robust model to makepredictions regarding the future performance of EVs?

4 In the record books of Angorra, the following data was found: x - 2y = 6 Equation 1 -x + 4y = 6 .. Equation 2 Choose the most efficient approaches to solve the system given above. Add the equations. Multiply equation 1 by 2 and subtract the equations. Solve equation 1 for x and substitute the result in equation 2. Substitute -x + 4y for 6 in equation 1.

Show full answers and steps to this exercise

Please solve this problem, part b and c is true or false.