What is the value of the discriminant for the quadratic equation –3 = –x2 + 2x? discriminant = b2 – 4ac

a. -8
b.4
c.8
d.16

On a piece of paper graph f(x)=5•(0.4)^x

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.