Benefits and Demand 2

John K. Dough often attends performances at his local comedy club. The following table shows the number of performances he attends per week.
QuantityTotal Benefit
00.0
17.5
214.5
321.0
427.0
532.5
637.5
742.0

If the admission price at the comedy club is $4.90, how many performances per week will John attend?

4
5
6
7
none of the above