The expression that shows John's total utility derived from billiards and bowling games is a) 30 − cost of billiards game.
What is the total utility derived from a product?
Total utility derived from a product is the satisfaction a consumer gains from using that product.
It comprises the combined value and enjoyment a person experiences throughout the entire consumption process.
Total utility is influenced by factors like the quality of the product, features, and the individual's preferences.
John has $30 to spend on a game of billiards, so his total utility derived from billiards is equal to his remaining money after he pays for the game.
The cost of the game is subtracted from his initial amount of money to determine his remaining amount, which represents his total utility from billiards.