Which number is rational

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.

The distributive property allows you to say that 3(x − 1) = 3x −

Find the value of x. round the length to the nearest tenth