Answer:
Four
Step-by-step explanation:
I recoloured the hyperbola to enfasize the two different equations (the other is a circle. The solution of the equations are the point where the two graphs touch, which are circled in black.
6.
0.416 au
Let y1=8sin(x) and y2=8cos(x), we must find the area between y1 and y2
$119.2