Question

wendy is logging the number of video game levels she wins per hour. she has determined the function to be f(x) = 6x + 9, where x represent hours and f(x) represents the number of video game level won. which of the following options describes the restrictions to the domain range correctly?

Answer 1

Since we are talking about real quantities (hours), x should be positive. Also, you need to take into account that Wendy needs to play in order to win game levels.
Therefore the domain will be: x > 0