PLEASE HELP!! Given the mean of a normally distributed data set is 25, with a standard deviation of 5, what percent of the population falls between 15 and 30?

A) .5
B) 41.5
C) 61.5
D) 81.5

Which of the following situations represents a linear relationship? a. theresa increases the distance she runs by 0.1 miles every week. b. the volume of a box depends on the length of box. c. the amount of money in a bank account increases by 1 percent each year. d. the population of a town doubles every 5 years.

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

The sum of two numbers is 86, and their difference is 20. find the two numbers