A. The cost of 2 hamburgers is $2.75 x 2 = $5.50.
The cost of 1 bag of chips is $1.50.
The cost of 1 soda is $1.25.
Therefore, the total cost of 2 hamburgers, 1 bag of chips, and 1 soda is:
$5.50 + $1.50 + $1.25 = $8.25.
B. If the student pays with a $10 bill, the amount of change he will receive is the difference between $10 and the total cost of the food:
$10 - $8.25 = $1.75.
Therefore, the student will receive $1.75 in change.