Can someone help me solve this problem asap!!

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 c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

If the scale factor between two circles is 2x/5y what is the ratio of their areas?