Hello! The think the Answer is - 1 1/2
See attached scatter plot
this does not show a linear pattern
Answer:
The answer is the third option from the top:
0, 0, 11, 15, 26, 32, 45, 46, 46, 46, 60, 71, 84, 88
I don't believe all of the information is given but I would say off the information that is provided it would be $70.00 per month