A test in Statistics has a mean of 73 and a standard deviation of 7.8. If 36 students are randomly selected, find the robability that the mean of their test scores is less than 70.

Determine which solution is correct for solving 5/7y=6 reciprocals.

Find the scale factor and ratio of perimeters for a pair of similar trapezoids with areas 49 cm squared and 36 cm squared.

Derek purchased a new gym membership. it costs him seven dollars a month plus two dollars for every time that he visits the gym. he wants to spend less than 25 dollars a month to visit the gym. write an inequality that models the situation using the variable v for the number of visits per month. also find the maximum number of visits he can make to the gym and still keep his cost below 25 dollars a month.