To find out how much change Regina should receive, first calculate the total amount she spent on the book and the game.
The cost of the book is $12, and the cost of the game is $14.
Total cost = Cost of the book + Cost of the game
Total cost = $12 + $14 = $26
Now, subtract the total cost from the amount Regina paid:
Change = Amount paid - Total cost
Change = $40 - $26 = $14
Regina should receive $14 in change.