Read the following problem:

The barista at the Teahouse of the December Sun has a problem. He needs to mix twenty pounds of two different kinds of tea together to create a blend called Strawberry Peppermint Delight. The two varieties are Peppermint Nirvana, which costs $12 a pound, and Strawberry Fields, which costs $15 a pound; the new tea will cost $13 a pound, and it will sell for the same price as the two blended teas would separately. How much of each variety will go into the twenty pounds of Strawberry Peppermint Delight?

Which of the following augmented matrices represents the system of equations that could be set up to solve this problem?

Read the following question:

A high school band sold large boxes of cookies for $4.75 each and small boxes of cookies for $3.25 each. The band sold a total of 305 boxes and raised a total of $1,196.75.

Which of the following augmented matrices represents the system of equations that could be set up to solve this problem?

Which of the following augmented matrices can be used to solve this system of equations?

With matrix notation, what does M2x3 x N3x4 equal?

Which of the following augmented matrices can be used to solve this system of equations?

What is the solution to the following matrix?

Read the following question:

A high school choir sold large boxes of cookies for $5.75 each, medium boxes for $4.75 each, and small boxes for $3.25 each. The band sold a total of 445 boxes and raised a total of $1,924.25. There were twenty more medium boxes sold than large boxes.

Which of the following augmented matrices represents the system of equations that could be set up to solve this problem?

Below is a matrix of the items in Jon's wardrobe:

How many blue items does Jon own?

Below is a matrix of the items in Jon's wardrobe:

How many combinations of blue pants and red shirts can Jon wear for the upcoming 4th of July party?

Read the following question:

A chemist needs one liter of a solution of 20% alcohol for an experiment. However, he only has two solutions on hand, one of which is 10% alcohol and one of which is 40% alcohol. How much of each solution must he mix in order to make his desired solution?

Which of the following augmented matrices represents the system of equations that could be set up to solve this problem?