Five times the sum of twice a number and one

Answer 1

5 x (2n+1) or 5(2n+1)

Both are correct just written a little differently.

Twice a number means 2 times the number, so 2n.

The sum of twice a number and one translates to (2n+1). Basically adding both 2n and 1.

5 times that would then be 5(2n+1)

Answer 2

Okay, let's let N = "a number"; so then "twice a number" will be 2 * N.

Now add the part that says "the sum of twice a number and one"; so now we have 2 * N + 1.

Finally, we have "Five times the sum of twice a number and one", which is 5 * (2 * N + 1).

Since we were NOT told what it is equal to, we cannot solve for the number N; but we have succeeded in expressing in mathematical language what the question(?) says.

Hope this helps you...