If a radioactive substance is quickly decaying at a rate of 13% per hour approximately how much of a 200 pound sample remains after one day

a)7.1
b)2.3
c)25.6
d)15.6

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

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.