She buys 12 bottles of tomato juice bottle contains three-quarter cups of juice

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Twelve less than a number is at most 20

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.