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In what industries would it make sense for government regulation that ensures all customers receieve some basic level of service?

Business invest time to attract customers, but some customers are simply not worth having. So some business think that they should fire the customers they lose money on. -Is it acceptable to fire customers who cost you money on an ethics point of view? -Is it acceptable for the company to...

nevermind, i figured it out.

Let A= [ 1 -2 -1 2] [-1 0 3 -2 ] [ 3 -4 -5 6] (sorry, can't line up the columns) I think I've done a) and b) correctly, I don't really understand c), d) and e) a) Find RowA and Nul A RowA={( 1, -2, -1, 2), (0, 1, -1, 0)} Nul A= {(3, 1, 1, 0), (-2, 0, 0, 1)} b) If...

no, it a textbook question and i am studying for exam.

The economy contains 2000 $1 bills. a) If people hold all money as currency, what is the quantity of money? -Is quantity of money = $2000? b) If people hold all money as demand deposits and banks maintian 100 % reserves, what is the quantity of money? -Is quantity of money also $2000...

I think i can show the three properties, but how would i show the column space is a subset of R^m?

How would I prove this theorem: "The column space of an m x n matrix A is a subspace of R^m" by using this definition: A subspace of a vector space V is a subset H of V that has three properties: a) the zero vector of V is in H. b) H is closed under vector addition. c) H is closed under...

why is det(kA)=k^ndet(A)? [show that it is true for all n and all k]

I need some help with this prove Given that A and B are n x n matrices, prove the following : the product AB is invertible if and only if both A and B are invertible. (Prove both sufficiency and necessity)

um, well A is the co-efficient matrix of the system, and B is the augmented matrix of the system, b is just the answer column of the linear equations.

Let b be the vector such that B = [A b] , and let a1, a2, a3 and a4 be the columns of A. Let m be the number of linearly independent columns of A, let k be the number of parameters (free variables), and let n be the total number of columns in A. In our example above, n = 4. Do you suppose...

Person A spends all his income ($100) on good X and composite good Y. Draw person A's budget constraint if good X sells for $5 each and each time he buys 5X, he receives a coupon redeemable for one unit of good Y. How would you draw this graph?

ok, so the only solution is 8.66 for b) the equation i got is 0=30-3q+0.375q^2 which i have trouble finding zero for.

i used graphing calculator and found that one zero is 8.66, how can i use this and find other roots?