If k and s are positive integers such that (2^k)(4^s) = 16, then 2k + s =
Choose the correct answer.
A) 2  B) 3  C) 4  D) 5  E) 6
lets get the eq into simplest orm..   (2^k)(4^s) = 16..   (2^k)(2^2s) = 2^4..   or k+2s=4..   since k and s are positive integers, only k as 2 and s as 1 satisfy the Equation..   so 2k+s=2*2+1=5..   5
<result>D</result>
If k and s are positive integers such that (2^k)(4^s) = 16, then 2k + s =