Mary earn a 8 percent commission for the instruments equipment that she sell. if she earned 2816.00 in commission on the tuba instrument that she sold what was the cost of the instrument?

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

answer:

c) the x-coordinate of the center of the circle increases by 3

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.