Kelly answered 3 items on a test incorrectly, this was 6% of her test. how many questions were on her test? plz, 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

Which graph depicts the path of a projectile

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?