I need help with a word problem

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.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?