I need good tips to study for 2 tests next week

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.

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

How do you write y-10=2 (x-8) in standard form