Can someone help me please?

How many $20 bills do you need to have to make $280

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?