Mrs. Williams wants to know how long it will take an investment of $450 to earn $189 in interest if the yearly interest rate is 6%, to be paid at the end of each year.

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30