Problema Solution
you have been saving the same amount of money every week. If you have five dollars more than a number for five weeks less than that number, how much money do you have saved so far?
Answer provided by our tutors
Let 'x' represent the number.
5 dollars more than a number means 'x + 5'
5 dollars less than a number means 'x - 5'
The amount of money saved is:
(x + 5)(x - 5) = x^2 - 25