Question

11) Which answer choice is equivalent to this

n +n +n + n
C) n.
A)
4+n
(B) An
D) n(n + 3)

Answer 1

4n = B

Explanation:

N + N + N + N

Pretend that n is equaled to 2

2 + 2 + 2 + 2 is also equaled to 4 * 2 because there are four 2s.

It is just the same as n + n + n + n = 4 * n

4 * n is also written as 4n which is B.

Lets also look at the other answers.

A does not make sense because 4 + 2 (the example) does not make sense.

C does not make sense because exponents deals with multiplying n and not adding it

D does not make sense because you can already tell using the Distributive property that it is wrong

The answer is b, I hope this helps!