I think u guys know what to do !!!

Find the domain and range of the following function f(x) = 51x - 21+ 4

What is the gcf of 20c^3-5c^4+30c^6

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 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: