Final answer:
The cost per day of feeding Mia's cat is found by dividing the total cost of the cat food ($34.99) by the number of days it will last (50 days), which results in approximately $0.70 per day, making option A the correct answer.
Step-by-step explanation:
To determine the approximate cost per day of feeding Mia's cat, we need to calculate the total cost of the 50 lb. bag of cat food and divide it by the total number of days it will last. The cost of the cat food bag is $34.99 and the cat eats 1 lb. of cat food per day. Therefore, the bag will last for 50 days.
Cost per day = Total cost of cat food ÷ Number of days the food will last
= $34.99 ÷ 50 days
= $0.6998 per day
When rounded to the nearest cent, the cost per day is approximately $0.70. Thus, option A, $0.70, is the correct answer.