2nd term in expansion of (3y + x)3

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

In september, louise planted a tree. every month, the tree louise planted grew 2 inches. what would the constant of proportionality of the line be?