What is the minimum value of 2x + 2y in the feasible region?

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Write the equation of the circle centered at (10,-2) with radius 2.

Luigi is the first person to finish a 5k race and is standing 13 feet beyond the finish line. another runner, mario, is still running the race and has approximately 24 feet before he reaches the finish line. what is the distance between mario and luigi? explain through words, numbers or pictures how you found the answer.