For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after h, hours of babysitting. How much will Nicole make after babysitting for 10
hours?

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