Answer:
$0.07, 10%
Explanation:
$2.85 - $2.78 = $0.07. First, subtract the numbers like the decimal isn't there. Then, you circle all the numbers to the right of the decimals after you have your answer. Count the circled numbers and write a decimal point at the right, there should be three circled numbers, those numbers are how many times you are going to put the decimal points to the right. Your answer should be 0.07. That rounds to ten, therefore your answer is 10%.