Observe the table,

The drink menu from a fast-food restaurant is shown at the right.

a. Write a matrix for to represent the current prices.

The matrix is .

b.

What scalar can be used to determine a matrix represent the new prices.

The store owner has decided that all of the prices must be increased by .

.

A matrix represent the new prices are multiply by the scalar is .

c. Find .

                                                         (Find for )

                                (Substitute matrix)

  (Distributive the scalar: )

                                              (Simplify)

.

d. Find .

This matrix represents the price increases for each item.

a. Matrix is .

b. A matrix represent the new prices are multiply by the scalar is .

c. .

d. .