How can you find the number of sevenths in 5 3/7

How can you tell when x and y are not directly proportional?

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.