If a dozen exercise books cost 144, what will 14 of the same books cost

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

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

Solve for x. −3/4(x+2)=6 enter your answer in the box