Abcd is a quadrilateral inscribed in a circle what equation can-be used to solve for equation d

Question and answers are in the attached picture. you so much in advance.

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.

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68