Determine the domain of each function, then graph the function
1. Mikhail receives a base weekly salary of $350 plus a commission of $50 for each vacuum he sells. His weekly earnings can be modeled by the function f(x) = 50x + 350.
2. A population of insects begins with 15 insects and doubles every month. The population can be modeled by the function f(x) = 15(2).