# Question #e8c24

##### 2 Answers

#### Answer:

Your bill will be 24.63 USD

#### Explanation:

Since you have a fixed rate for a month (which is 15.99 USD) and time dependent variable, your equation will be:

#### Answer:

#### Explanation:

We can write an equation based on the information in the problem.

We can think of

So

In math, *independent variable* and *dependent variable*. Those might sound like big, science-y words, but they basically mean that a change is

So minutes change money. That means