Can someone factor this problem for me?

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Which of the following is true for the relation f(x)=2x^2+1