Can someone help with. this please

I'm pretty sure:

a) pepsin optimal pH: 3 and lipase optimal pH:8

b) No, because the stomach needs to be acidic and have an acidic pH but lipase is considered alkaline because its optimal pH is between 8-14 meaning it's an alkaline.

Not sure if this is any help but I hope it helped a little bit! :)

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15

the answer is c

explanation: