Help me pls help thank you soo much :)

Select the quadratic that has root x = 8 and x = -5

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*