The answer is going to be
x= 2,0
y= 0, -6
Both companies charge the same amount I am assuming you are asking which to go with?<span />
A. Always because imagine a line where one is y=x and the other is y=-x+1. The point of intersection would be (1,1)
In order to calculate the Circumference, You can Use the formula:
C = 2πr
C = πd
They are valid one's, depends, on the given value, either diameter or radius
Hope this helps!
We can solve this using the formula nth term = a+(n-1)d
so the 10th term will be 87
75th term will be 132
and nth will be 9n-3