The equation and graph of a polynomial are shown below. the graph reaches its maximum when the value of x is 3. what is the y-value of this maximum?

y =

a. 4
b. 3
c. 1
d. 2

Asap 25 pts + brainlest to right/best answer

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)