Can you please help me

An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?