Does anybody know the answer to this question on Mathswatch?

:)

You are choosing between two health clubs. club a offers membership for a fee of $ 28 plus a monthly fee of $ 20. club b offers membership for a fee of $ 20 plus a monthly fee of $ 22. after how many months will the total cost of each health club be the same? what will be the total cost for each club? in __ months the total cost of each health club will be the same.

What states a rule using variables expression term or formula

If the radius of a circle is 6 inches how long is the arc subtended by an angle measuring 70 degree