I need the answers ASAP

Which of the following graphs could represent a quartic function?

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:

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?