Which of these formula that can be used to determine the nth term of the arithmetic sequence 15,27,39,51 ? a) an= 3n + 13
b) an= 12n + 3
c) an= 13n + 15
d) an = 15n + 12

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: