If n is a positive integer, and 4^(n+2) + 4^(n+3) = j, what is 4^(n+4) in terms of j ?
Replace 4^(n+3) with 44^(n+2) and combine so that the given equation is 54^(n+2) = j.
Also, rewrite 4^(n+4) as 164^(n+2). Since 54^(j+2) = j, multiplying by 16/5 gives 16*4^(j+2) = 16j/5.
If you’re not comfortable with algebra/manipulating exponents, another solution is to pick a value for n, I.e. n = 1.
Was that a grid in question or Multiple choice?
@cptjosh787 must be multiple choice; there is no way to grid in ‘j’.