You just have to add the base numbers together and thats your answer.
Remark
Yesterday and today make it very dangerous to answer any math question. I'm going to see if I can answer this without the editor throwing up. The method is worked out now that I can see that the bug might have been fixed.
The final answer is y = -(x - 24)^2 + 144
The first thing to do is to complete the square.
y = -(x^2 - 48x ) - 432
y = -(x^2 - 48x + (48/2)^2 ) - 432 + 24^2
y = -(x - 24)^2 + 576 - 432
y = -(x - 24)^2 + 144
The vertex is (24,144)
Explanation
It means that when 24 games are sold, the profit is a maximum 144 dollars. You can convince yourself of that by trying a couple of numbers. Try x = 28. If you sell 28 games the following will happen.
y = -(28 - 24)^2 + 144
y = - 4^2 + 144
y = -16 + 144
y = 128 which is less that 144.
You could also try 20 which will give you the same answer 128
Problem B
What are the x intercepts?
y = -x^2 + 48x - 432
You do not need the quadratic equation for this. It factors.
y = -(x - 12)(x - 36)
when y = 0 then either
x - 12 = 0
x = 12
When x = 12 the profit is 0. He starts to make money at x = 13
or
x - 36 = 0
x = 36
also he his making nothing when x = 36 which seems odd because you would think that the more you sell the more you make, but the quadratic makes this a limiting consideration.
So x<12 loses money
x>36 looses money
12<x<36 is where he makes some money.
Answer:
7.89 births per minute
Step-by-step explanation:
525600 minutes in a year
4,148,000 divided by 525600 =
7.89193302892
Answer: 10.2
All you would do on this is see how many times 0.06 goes into .612 and as you can see the answer is 10.2 hope this helps.