What percent of 980 is 215.6?

Use set buikder notation to represent the following set: {, -2, -1, 0}

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.

Anyone know? will mark brainliest if correct