2(B +17)
1) Given that, let's write as an algebraic expression
"twice the sum of B and 17"
2(B +17)
We can write this way because what's being multiplied by 2 is the sum, that's why we can write the Parentheses. Applying the distributive property we'll get later
2(B+17)
2B +34
2) Hence, that's the answer 2(B +17)
