The product of a scaler and vector produces a vector with the direction opposite of the original vector what must be true?

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

Find the difference (8ab+a+2) - (3ab+6)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10