I need help with this 2(n+3) - 4 < 6 n

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

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