Answer:
The second job pays the best.
Explanation:
Total amount of sales during the year is $1000000.
First job pays $350 per week plus 2% commission on all sales.
There are 52 weeks in a year.
So, the total amount of payment from first job

The second job pays $1,200 per month and 2.5% commission on all sales.
There are 12 months in a year.
So, the total amount of payment from second job

As

Thus, the second job pays the best.