What is the answer for 8 4/7 ÷ 15

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?