1. A trapezoidal shaped park is built on a slight incline. The function for the ground elevation above sea level is
f (x, y)= x - 3y + 20 feet. What are the coordinates of the HIGHEST point in the park? (+2 points)
Value
Vertex
(x, y)
Function Calculation
S (, y) = x - 3y + 20
У1)
5
0
5
What are the coordinates of the HIGHEST (maximum) point and what is the value of the function at that point?
Coordinates:
Highest point (maximum):

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?