Step-by-step explanation:

Answer:
y - 3 = 2(x + 1)
y - 3 = 2x + 2
y = 2x + 5
Step-by-step explanation:
In a quadratic function you square x so I'd assume that's what they want.
That means the values of f(x) would be:
9
1
1
9
25
There is 9 servings and 1 ounce left over.