The expression that is equivalent to 7(x + 3) is B. 7x + 21
Explanation:
This expression demonstrates the distributive property. For the distributive property, it tells us that we can remove the parenthesis if the term that the polynomial is being multiplied by is distributed to, or multiplied with each term inside the parenthesis .
Now let's go back to the problem
7(x + 3)
now by applying the Distributive Propery
7 * x + 7 * 3
The parentheses are removed and each term from inside is multiplied by the 7.
Now we can simplify the multiplication of the individual terms:
7x + 21
