Someone please please help urgent i beg you

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left