PLEASE HELP ME A sample of 600 grams of a radioactive substance decays according to
the function At=600e-0.036t, where t is the time in years. How much of the
substance will be left in the sample after 30 years? Round to the nearest
whole gram.

A. 0 g
B. 2947 g
C. 204 g
D. 1 g

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

Let w=23 . what is the value of w + 45 ?

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.