Answer:
The answer is that the difference in the amount that Jackson and Avery paid including tax is $1.31.
Explanation:
First, you have to calculate the amount they paid including the tax by finding the 6% of each price and adding this amount to the price:
-Jackson: $15*6%=0.09
$15+$0.09=$15.09
-Avery: $13*6%=$0.78
$13+$0.78=$13.78
Now, you have to subtract to find the difference:
$15.09-$13.78=$1.31
According to this, the answer is that the difference in the amount that Jackson and Avery paid including tax is $1.31.