Question

the expressión 3+4.5 n can be used to find the total cost un dollars to Buy n pens what is the total cost of 5 pens?

Answer 1

$25.50

Step-by-step explanation

We have to replace n by 5 in the given expression:

`\begin{gathered} 3+4.5n \\ 3+4.5\cdot5=3+22.5=25.5 \end{gathered}`

It costs $25.50 to buy 5 pens