Compute the standard deviation of the following set of data to the nearest whole number: 10, 15, 15, 20, 25

Restrictions on f(x) = 1/x+5 and g(x) = x-2

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning