The function is graphed as shown below
Part A:
We use the formula

to find the vertex of the function. A quadratic function of the form of

and equating this form to the given function

, we have

and

.
Substituting

and

into the vertex formula, we have

, as shown in the graph
This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos
Part B:
We can find solution to this equation by factorising





and

, as shown in the graph
The two values means that the company makes no profit when they either produce 5 or 15 photos
If your looking for X, it would be X = 7
The answer is 20
the scale factor is 1.25 (to find that out do 12.5/10) then multiply 16 by 1.25 and you get 20.
Answer:
3 is the answer 1 + 2 is the same as 1 + 1 + 1=3
hope this helps
have a good day :)
Step-by-step explanation:
The y intercept is - 1
It is where the line touches or crosses the y axis