What is average number of hours worked rounded to nearest 10th of an hour by all employees . hours per week 10, 15, 20, 30, 35, 40number of employees 11, 16, 23, 18, 13, 12

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.