You find an online service that pays you to fill out surveys. They will give you 25 cents per
completed. After you complete 52 surveys, you have $39.50 in your
piggy bank. How much money did you start with?

Use the matrix-column representation of the product to write each column of ab as a linear combination of the columns of a.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?