What is the domain and range ?

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 values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20