Which of the following is equal to 5^k*7^(k-1)?  Choose the correct choice from the following choices:
A) 5*35^(k-1)
B) 5*35^(k-1)
C) 35^k
D) 5*35^k )
E) 35^(2k-1)
5^k*7^(k-1) = 5*5^(k-1)*7^(k-1) = 5*35^(k-1)   The answer is 5*35^(k-1).
<result>A</result>
Which of the following is equal to 5^k*7^(k-1)?