Answer:
The turning point of the graph is at (3,-16)
Step-by-step explanation:
The general equation of curve is given as:
y = x² + ax + b
The two point for which the equation satisfies is (0,-7) and (7,0).
Substitute (0,-7) in the general equation:
y = x² + ax + b
-7 = 0² + a(0) + b
b = -7
Substitute (7,0) in the general equation:
y = x² + ax + b
0 = 7² + 7a + b
Where b = -7
0 = 49 + 7a - 7
0 = 42 + 7a
a = -6
The equation of the curve is:
a = -6 and b = -7
y = x² + ax + b
y = x² - 6x - 7
Graph of the equation is attached below.
We can see that the the turning point of the graph is at (3,-16)
Answer:16
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
Determine the profit function.
Profit function is calculated as thus:

So, we have:



Answer:
5
Step-by-step explanation:
35 in total, sliced into 7 equal parts (1 per week).
so, each weekly part is therefore 35/7 = 5.
You just multiply 16 and 3 and it gives you 58