Answer: 
104 paychecks
Explanation:
Since you're given 6 paychecks in 12 weeks, you can divide to find out how many paychecks he can get in 1 week. 
12 ÷ 6 = 2
This means that he gets 2 paychecks each week.
Since it is asking how many he can get in 52 weeks, multiply 52 by 2.
 52 × 2 = 104
This means that Brandon gets 104 paychecks in 52 weeks.