Find the area of the figure

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Anyone know these questions? i need ,.