A. 1 only- this study provides evidence that taking B12 vitamin daily contributed to protecting against Alzheimer’s disease.
Answer:

Step-by-step explanation:
Vertex form is

We know that h and k are both -4. Let x be -2 and y be -16.





So the equation in vertex form is

In total 2/4 + 3/4 = 8/4 x 5 = 25/20 total
2/4 x 5 = 10/20 milk
3/4 x 5 = 15/20 flour
I will use a quadratic formula: