Just tell me the equation

What is the range for 31,39,29,34,37,24,36,33,34,28

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.

9/10 divide by -3/15 as a mixed number