357 miles in 5 hours how many per hour

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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.

Hi, can anyone show me how to do this problem? 100 points for this. in advance