What is 12x+8-7x-10 simplified

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.

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Describe a situation that you could represent with the inequality x< 17