Matrices and Row Operations Answers

A store sells yogurt in small, medium, and large sizes. A small yogurt costs $2, a medium costs $3, and a large costs $5. In one hour, the shop sold 27 yogurts for $98. There were five more large yogurts than small yogurts. The matrix below represents the system of equations in this situation.How many of each size yogurt did the store sell during that hour?

Which operation can be used with the augmented matrix below?

The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix below represents the tickets sold and the total cost of the tickets for three performances.Which of the following is the result of performing the row operation on this matrix?

When Lydia performed an operation on the matrix below, she forgot to include one element.What is the value of the unknown element, b?

Which of the following is the result of the operation below?

The matrix below represents the solution to a system of equations.Which of the following describes the solution?

A student wrote the matrix below to represent the solution to a system of equations. Which of the following describes the solution?

Juanita wants to perform row operations on the augmented matrix for the system below.Which matrix should Juanita use to perform the operations?

Kamal wrote the augmented matrix below to represent a system of equations.Which matrix results from the operation ?

Dante is solving the system of equations below. He writes the row echelon form of the matrix. Which matrix did Dante write?