A student has started a lawn care business. He charges 15 per hour to mow lawn sand 20 per hour for gardening. Because he is still in school, he is only allowed to work for at most 20 hours per week. His goal is to make at least $300 per week.

C) Create a system of equations or inequalities that models the situation. Define the variables you use.

D) The graph shows one of the relevant equations in this situation. Draw the graph of the other relevant equation.