the difference from 40000 to the future value in 2020, namely 5 years later is simply the yield or interest amount.

Answer:
Sorry no one has answered for so long, by now you probably already answered but anyway, the answer would be 31.
Step-by-step explanation:
Because the y axes values are the same, we just need to figure out how far they are on the x axes. Which is indeed 31.
Answer:
Since magnesium = 2, and potassium = 1, magnesium is greater than potassium (2 > 1).
If we assign these elements letters, m and p respectively,
