Question

A computer store decides to increase the prices of all the items it sells by 15%. The store manager uses matrices to prepare the new price list. Matrix A contains the unit price of each product in each category. Matrix B contains the revised price of each item in each category. How can the manager obtain the entries for Matrix B?

Answer 1

A = matrix of old prices
B = matrix of new prices

If you increase the prices by 15%, then that's the same as multiplying by 1.15, so

B = 1.15*A

Answer 2

`1.15*A` means you multiply EVERY value in matrix A by 1.15 to get new values for matrix B

Answer 3

thank you

Answer 4

no problem