Answer:
the maximum value is 7
The minimum value is 0
Step-by-step explanation:
Step One : Interpret the question
The above question can be written like
The Equation
The diagram of the triangular plate and the bounded lines is shown on the first uploaded image
From the diagram 


Partial differentiation of the equation w.r.x

Partial differentiation of the equation w.r.y
Looking at the diagram the maximum value is 7 i.e at (x , y) = (0,1)
The minimum value is 0 i.e (x , y) = (0,0)
I think it would be B but i am not 100% sure.
Answer:
hi!!! Welcome Im not a robot xd see
You look, either on line or in an actual book, to
find how many miles are equal to 1 kilometer.
Then you use that number like this:
(7 kilometers) x (0.6214 mile/kilometer) = 4.25 miles (rounded)