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You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

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

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?