He will need exactly 24 stickers. To get this number, you must multiply both sides. :)
The volume of a cone is

since V=65.94 and r=3, you just plug it in and solve for h which results to 6.996cm
Multiply the first equation by -2 to eliminate a variable so it becomes:
-12x+8y=48
4x-8y=-32
Add them together.
-8x=16
x=-2
Plug it in one equation.
6(2)-4y=-24
12-4y=-24
-4y=-12
y=3
Ordered pair is: (-2,3)
HOPE THIS HELPS YOU..... :)
Answer:
y = -x - 8
Step-by-step explanation:
Slope is -1 and y intercept is -8