Math .. you : ) construct an angle

What is 1/2 x (6 x 4)+3 + 2 show your work

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.

Does the point (1, sqrt 7) lie on circle shown.