Question

Helen bought notebooks and pencils for school. The number of pencils she bought is given by 6(n-3) , where n is the number of notebooks she bought. How many pencils did Helen buy if she bought 5 notebooks?

Answer 1

So the number of pencils bought can be represented by an equation: $P=6(n-3)$, where n is the number of notebooks bought. Since Helen bought 5 notebooks, simply plug 5 into n: $P=6(5-3)=6(2)=12$. So Helen bought 12 pencils.