Answer:

Step-by-step explanation:
Given

Required
Determine number of items that gives maximum earnings;
The general form of a quadratic equation is:

And the maximum is calculated as:
If a<0
Comparing
to 
We have that:

Substitute these values to




<em>The number of item that maximizes the function is when y = 15</em>
Answer:
11r + 10s
Step-by-step explanation:
Answer:
spin it 35 times
Step-by-step explanation:
there are 3 multiples of 4 under 15 (4,8,12) so the chances of a 4 will be 3/15 or 1/5 to find the chances of 7 times just multiply by 7 so the finale answer is 1/35
P.S. please give brainliest
Step-by-step explanation:
Use this sort of layout, but where x will be an odd number, do not shade it. there should be a pattern of shaded segments followed by unshaded segments repeating
Answer:
asd
Step-by-step explanation: English pls?