Which of the following equations represents a parabola that opens down and has a vertex at (3, -1)? answer choices. a. y= -2(x-3)^2+1 b. y= 2(x-3)^2-1 c. y= -2(x+3)^2-1 d. y= -2(x-3)^2-1

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-responsequestion. there are 15 questions on the test and the students have been given 55 minutes to complete itwhich value could replace x in the table? 5507-m23-m8(15-m)8(15)-m

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.