Question

Which quadratic function has the largest maximum over the set of real numbers?

Answer 1

Answer: B

Explanation:

A: First we find the axis of symmetry or -b/2a: -2/-2 or 1, so then we calculate for x=1, so -1+2+4=6-1=5 is the maximum

B: Clearly 5.25 is the maximum here. Notice how each time it increases by half of the previous.

C: This is vertex form. The vertex is (5,5)

D: Clearly not the answer