Answer:
$0.50
Explanation:
To find the cost of one banana, you need to divide the total cost by the number of bananas. In this case, the total cost is $3.50 and there are 7 bananas.
Cost of one banana = Total cost / Number of bananas
Cost of one banana = $3.50 / 7 = $0.50
Therefore, each banana costs $0.50.