Answer: No , it is not reasonable as the total amount is sum upto $34 but in register the amount of bill is shown is greater than the original bill amount.
Explanation:
Since we have given that
The prices rounded off to the nearest dollar were as follows:
$1.85 → $2
$8.56 → $9
$6.30 → $6
$2.73 → $3
$5.25 → $5
$4.09 → $4
$7.95 → $8
– $0.85 (coupon) → $1
– $2.10 (coupon) → $2
So, total amount will be

But the value in the register gives total bill as $41.44
So, it is not reasonable as the total amount is sum upto $34 but in register the amount of bill is shown is greater than the original bill amount.