Susie is participating in a bake sale for a fundraiser. she baked 8 pies to sell. two pies weigh 105 g each, one pie weighs 106 g, two pies weigh 108 g each and the last three pies weigh 103.5 g, 102 g and 104.5 g. what is the average weight of the pies rounded to two decimal places?

the first week at javier's new job he spent $12.48, $9.50, $10.25, $4.99, and $8.59 on lunch.
in the second week, he spent $3 more in total for the 5 lunches than the first week.
what is the increase in the mean for the second week compared to the first?
round the answer to the nearest penny.