Help please I need it​

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

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

Answer 20 points and brainiest ! on the board, your teacher writes an example of how to find the median. one of the numbers is erased, leaving what is shown, 18, 30, 26,12 22. what is the median? a. 10 b. 20 c. 24 d. 28