Question

which of the following expressions represents the statement below?
twice the sum of a number and 1
a. 2n + 1
b. (n + 1) + 2
c. 2(n - 1)
d. 2(n + 1)

Explanation:

Step1: Define the number

Let the number be $N$.

Step2: Find sum of number and 1

The sum of $N$ and 1 is $N + 1$.

Step3: Multiply sum by 2

Twice the sum is $2(N + 1)$.

Answer:

D. $2(N + 1)$