6. You have $50.00. You buy a CD for $15.50. You sell it to your friend for $12.00. He doesn't like it, so you buy it back for $10.00. There is a scratch on it, so you return it to the store and get
your money back. How much did you lose or make?

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features