Which is a square matrix?
[ 2 3 -8 1 -5 19 0 -3 5.6 7.8 6 78]
[ 2 3 -8 0 -5 19 0 0 5 8 6 0]. [1 3 -9 8 2 2 0 5 16 1 -3 11] [3 1 9 8 2 2 0 5 16 1 3 11]

Find the difference (8ab+a+2) - (3ab+6)

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.