Math, 7th grade. Using the results from parts D through G, write an expression that represents the number of years elapsed between the disappearance of the Greek city of Helike and the end of the US Civil War. Write the expression in terms of c and w. Then solve the expression to find out how many years separate these two events.

D= Yes, I think the same. I think this because they're the same expression just different numbers.

E= The Civil War ended in 1865.

F= The expression in terms of w to represent the year of Helike’s disappearance is -1/5w.
Let w represent the year the Civil War ended.
The year the Greek city of Helike disappeared is -1/5 times the year the US Civil War ended.
The year the Greek city of Helike disappeared =
The expression in terms of w to represent the year of Helike’s disappearance = -1/5w

G= The year Helike disappeared was 373 BC.
1/5 times 1865
1/5 = 0.2 (As a decimal)
1865 times 0.2 = 373
Since it is not negative, (What it would be as a negative (-373)), It is BC
So the answer is 373 BC.