Laura bought a notebook and pencil for $4.50 the notebook cost twice the amount of the pencil

write a system of equation to find the cost of the notebook and pencil

Answer: N=3

Step-by-step explanation:

Let's represent notebooks with "N" and pencils with "P".

Then,

N + P = 4.50

Since N = 2P, we can substitute that directly into the equation:

(2P) + P = 4.50

3P = 4.50 (divide both sides by 3)

P = 1.50

Now that we have P, we can in turn substitute that into the equation.

N + (1.50) = 4.50

N = 3.00