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 #, X
1
2
3
4
5

# of Tickets
1
4
7
10
13