Answer:
C
Step-by-step explanation:
Multiply the 1.5 hours per pound by 2.75 pounds and we get 4.125 hours or 4 1/8
The total revenue that is gained from the sales of the cakes is determined by multiplying the number of cakes by the price. If we let x be the number of $1 that should be deducted from the price and y be the total revenue,
y = (25 - x)(100 + 5x)
Simplifying,
y = 2500 + 25x - 5x²
We get the value of x that will give us the maximum revenue by differentiating the equation and equating the differential to zero.
dy/dx = 0 = 25 - 10x
The value of x is 2.5.
The price of the cake should be 25 - 2.5 = 22.5.
Thus, the price of the cake that will give the maximum potential revenue is $22.5.
First, note that 
Then
Consider all options:
A.
By the definition,
Now
Option A is true.
B.
By the definition,
Then
Option B is false.
3.
By the definition,
Now
Option C is false.
D.
By the definition,
As you can see 
and option D is not true.
E.
By the definition,
Then
This option is false.
Their sum would be of odd number....
