Which increases faster, f(x)=2x-4 or g(x)2^x-4?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Your client has saved $1,860 for a down payment on a house. a government loan program requires a down payment equal to 3% of the loan amount. what is the largest loan amount that your client could receive with this program

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.