What is the equivalent fractions between 4/7and3/5

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100