Ap math
this problem has 2 parts. i have answered the first part but need in the

1. find the discriminate of y=x^2 -6x-9
72
**2. what does this tell you about y=x^2 -6x-9**

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two