Need help with Part B.

Five groups of people are standing in line to buy concert tickets. The table shows the number of
tickets each group wants to buy.

Part A: The pattern in the table continues. How many tickets does group 6 want to buy? 16


Part B: Use the pattern in the table to write a rule for the number of
Tickets each group wants

Group # of
Number, x Tickets

1 1
2 4
3 7
4 10
5 13