the size of an interior angle of a regular polygon is 3x. It's exterior is (x- 20)°. Fine number if the sides of the polygon​

Based upon past experience, barry expects no overdrafts. he expects no 2nd copies of statements. barry estimates that he will use network atms about 5 times a month with either bank. barry decides in the end to choose eecu. assuming that both banks provide the necessary services equally well, and based upon the tables of fees given above, how much can barry reasonably expect to save annually by choosing eecu in this case over e-town bank? a. $72 b. $78 c. $144 d. $24

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)