What is the simplified form of 3 square root 5c× square root 15c^3

Which of the following are parts of a sphere

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.