Which of the following is equal to 5^k*7^(k-1)?

Which of the following is equal to 5^k*7^(k-1)?

Quiz

Answer/Solution

5*35^(k-1)

Steps/Work

5^k*7^(k-1) = 5*5^(k-1)*7^(k-1) = 5*35^(k-1)
The answer is A.