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Chapter 4: Q40. (page 173)

For Exercises 40-42, use the table below that shows the purchase price and selling price of stock for three companies.

For a class project, Taini 鈥渂ought: shares of stock in three companies. She bought 150 shares of a utility company, 100 shares of a computer company, and 200 shares of a food company. At the end of the project she 鈥渟old鈥� all of her stock

Organize the data in two matrices and use matrix multiplication to find the total amount she spent for the stock?

Short Answer

Expert verified

The required amount is24900 .

Step by step solution

01

Step 1- Write the required matrices 

Form the matrices according to the provided information.

S=[150100200]

P=[5455.204858.606061.10]

02

– Write the product of obtained matrices

Perform multiplication between the matrices S=[150100200]andP=[5455.204858.606061.10]

SP=[150100200]鈰�[5455.204858.606061.10]=[2490026360]

03

Step 3- Make the conclusion

The first column of the obtained matrix is related to purchase and second is related to sell so the amount will be the required amount because it is related to purchasing price of the companies.

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