If 3^x*4^y = 19,683 and x – y = 9, then x = ?  Choose the correct choice from the following answers:
A) 8
B) 9
C) 10
D) 11
E) 12
Since 19,683 is an odd number, it is not a multiple of 4.   This means that y must equal zero.   Since x - y = 9 and y = 0, then x = 9.   The answer is 9.
<result>B</result>
If 3^x*4^y = 19,683 and x – y = 9, then x = ?