30,00 watts. Think of the metric system like this: K H D B D C M Now. you have kilo at the begining and milli at the end. To transition from left to right you multiply by 10 each time. To transition from right to left, you divide by 10 each time.
C and D because in that image that is what an proportional relationship looks like so anything that looks like the graph in the photo or c and d is proportional
