Colby and danielle clean pools for extra money over the summer. colby's income is determined by f(x) = 3x + 12, where x is the number of hours. danielle's income is g(x) = 5x + 10. if colby and danielle were to combine their efforts, their income would be h(x) = f(x) + g(x). assume colby works 4 hours. create the function h(x), and indicate if colby will make more money working alone or by teaming with danielle.