Sorry about the handwriting I tried. But I need help

On a piece of paper graph f(x)=5•(0.4)^x

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.

Explain how you can use the associative property to evaluate (7x50)x4.