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Inventory control:Suppose that you are employed by a local department store, and you are placed in charge of ordering vacuum cleaners. Based on the past experience, you know that the store will sell 500 vacuum cleaners per year. You must decide how many times a year to order vacuum cleaners and how many to get with each order. You could order all 500 at the beginning of the year, but there will be cost (the holding cost) for storing the unsold vacuum cleaners. You could order 5 at a time and place 100 orders over the course of the year, but there are cost for paper work and shipping for each order you place. Perhaps there is an amount to order somewhere between 5 and 500 that minimizes the total cost: The holding cost plus the reorder costs. This number is called the lot size. To simplify the mathematics, we make two assumptions:a. Demand for vacuum cleaners remains constant through the year.b. Stock is immediately replenished exactly when the inventory level of vacuum cleaners reaches zero.Here x is the lot size, the amount ordered each time inventory reaches zero. The graph signifies that the inventory is decreasing at a constant rate (lines with negative slope). The average number of items in the stock is x/2Let D be the annual demand for the item. [for the vacuum cleaners, D = 500] Our goal is to find a function C = C(x), where C represents the holding costs plus the reorder costs and x is the lot size. We seek the value of x that minimizes C.
Consider the following elements of the vector space P3 of all polynomials of degree less than or equal to 3. p(x)= x-1, q(x)=x+x2, r(x)= 1+x2-x3
Suppose that E is a normed linear space, and C is a subset. Prove that C is weakly bounded if and only if C is norm bounded. Conclude that weakly convergent sequences in E are bounded.
Find the value of "a" that makes the following function differentiable at x = 2.
A bookstore sells a total $4500 worth of math books, $3000 worth of science books, and $1200 worth of history books. the book store also sells several other types of books. the total sales are $11,000.
Solve each of the following initial value problems: Check to see if eigenvectors are multiples of the given eigenvectors.
Each unit produced costs the company $8.00, and is sold for $10.00. How much will the company gain or lose in a month if they stock the expected number of units demanded, but sell 2000 units?
Let I be the ring of integral Hamilton Quaternions and define N: I ->Z by N(a+bi+cj+dk) = a^2 +b^2 +c^2+d^2
Find the fundamental matrix for differential equation.
Task: Apply curve-fitting techniques and interpret the results. As such, your work will include doing scatterplots, determining the equation and graph of the curve on the scatterplot, finding the r^2 value,
What is the purpose of a dashed line when graphing a non-linear inequality? Give examples of graphs with and without dashed lines.
Trace the algorithm below and track the number of times that the addition operation (+) is executed over the course of the program's run time. Answer the question by giving a formula in terms of n:
A total of 381 tickets were sold for the school play. They were either adult tickets or student tickets. There were 61 fewer student tickets sold than adult tickets. How many adult tickets were sold?
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