Answer: C) 0
The lines are parallel. They never cross. To have a solution, the lines need to intersect. Each intersection is a solution. That's why there are no solutions here. The system is inconsistent.
Note how the slopes are both 1/2 while the y intercepts are different. Parallel lines have equal slopes but different y intercepts.
1/2 + 4x = 5x - 5/6
1/2 = x - 5/6
3/6 = x - 5/6
x = 8/6
Using order of operations, we can see we should first solve for the exponents, and then multiply the exponent values by each other.
3²×

9×243
2187
Another way to solve this is to add the exponents together and simply do

. We can only do that in this case, however, because the values are being multiplied by each other.
Either way we solve, we will get
2187 as our final answer.
Pi r^2 h
Divide 10 by 2 to get the radius.
pi 5^2 9
pi 25 9
225 pi is the answer