ASAP PLEASE. THANKS :) What is the best way to determine whether a given point is a solution to a system of equations?

A. Substitute the x and y coordinates into one equation and check to see if they work.

B. Graph the equations and see if the point lies on both lines

C. Substitute the x and y coordinate into both equations and check to see if they work

D. Solve the system of equations and compare the answer to the given point

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet