Please help me with this

Barry wants to open a checking account. he wants online services, and a debit card. he is looking at the following tables of fees from his employer's credit union, eecu, and a local bank, e-town bank: 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 select the best answer from the choices provided a b c d

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?