100%(4)4 out of 4 people found this document helpful
This preview shows page 1 - 2 out of 4 pages.
Math1003 Algebra and Calculus, Fall 2011Name:Hok Him LAMHomework-3 : Due 09/30/2014 at 11:55pm HKTAugmented Matrices and Gauss-Jordan Elimination•Express systems of linear equations in terms of augmented matrices.•Perform row operations to find the reduced form of an augmentedmatrix.•Determine the solution of a system of linear equation by using thereduced form of its augmented matrix.•Express the solution of a system of linear equations.•Set up and solve systems of linear equations.Matrix Operations and Inverses•Perform basic operations on matrices.•Find the inverses of matrices, if existing.1.(2 pts)Kimmie wants to earn money by baking and selling cookies.She works up a business plan and finds her cost and revenuefunctions whose graphs are shown above in green and yellow,respectively.a) How many cookies must be produced and sold to breakeven?b) What is the dollar amount coming in and going out if Kim-mie just breaks even?Answer:c) Use the formulas to write Kimmie’s profit function,P(x),from producing and sellingxcookies.(NOTE: Profit = Revenue - Cost)Answer: