Find the scale of each map 3cm on the map corresponds to an actual distance of 120 km

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

  best answer for the question.1.     divide  7/24  by  35/48  and reduce the quotient to the lowest fraction. 

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot