# How do you write a numerical or variable expression for each quantity: the value in cents if 7nickels?

##### 1 Answer

#### Explanation:

We're being asked to write an expression that expresses the value, in cents, of seven nickels.

First we need to know the value of a nickel. It's 5 cents. So let's write that as:

Next step is to write down the number of nickels. There are 7 of them. Since

Ok, so if we have 7 nickels and so have

#7N=(7)(5) cents.

And we can simplify it to:

To write a variable expression for this (which would tell us how to calculate how many cents an unknown number of nickels would be), we would write it like this: