An online retail company determined that their cost for each day, x, can be determined by the function C(x) = 2x - 20x + 70

An online retail company determined that their cost for each day, x, can be determined by the function C(x) = 2x² - 20x + 70 and their revenue by the function R(x) = -x^2 + 5x + 18. How many days will it take for the company to earn a profit?452022