Can someone help me with this? Please it’s due

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.

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)