Answer:
The value of is 40.
Step-by-step explanation:
It is given that the gradient of function is continuous.
By fundamental theorem for line integrals,
Where, C starts from P and end at the point Q.
We have to find the value of .
The function is defined from contour line 10 to contour line 50.
Therefore the value of is 40.
Answer: The answer is the number of each type of topping ordered.