This family take the boat once in each season. Do they spend more then $100 over the year? If so, how much ? If not , how much change would they get from $100?

We do not know how much the boat costs but suppose that the coast of the boat is X.

We know that the family takes the boat once in each season, and we have 4 seasons in the year.

So in a year, the family spends 4*X

now, if 4*X is more than $100, then the family spends:

4*X - $100 more than $100.

if 4*X is less than $100, then the change that the family receives is:

$100 - 4*X

just finished this it is b. centrifugal force

answer-the island had airfields that the u.s. military needed.