Triple 3, then add s to the result

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

What is y-5=3(x+1) in slope intercept form