Question

Solve.

|x| + 5 = 8

Answer 1

A.
{–3, 3}

B.
{–13}

C.
{13, –3}

D.
{–13, –3}

Answer 2

|x| + 5 = 8

|x| + 5-5 = 8-5 ... Subtract 5 from both sides.

|x| + 0 = 3

|x| = 3

x = 3 or x = -3


Note: in the last step, I'm using the idea that if |x| = k, then x = k or x = -k where k is some positive number

Answer 3

So it's A?

Answer 4

correct

Answer 5

Thanks :)

Answer 6

np