Final answer:
The expression to determine how many coins Kendall has after the first two levels is 40 (coins earned) - 59 (coins lost).
Step-by-step explanation:
To find out how many coins Kendall had after playing the first two levels of her video game, we use a simple expression that reflects the transactions (gains and losses) of coins across the levels.
Kendall earned 40 coins in the first level and then lost 59 coins in the second level. The appropriate mathematical expression would thus be the sum of her coins after the first level and the change in the number of coins after the second level.
The expression is 40 coins (earned) - 59 coins (lost). When she plays the game, she starts with 40 coins and then the loss is subtracted, which gives the total number of coins she has after completing the two levels.