7x-3x+2=-8x-8 how do i solve step by step ?

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 sin 7x/4 ? i need on this urgent trig

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36