## Explanation

The general formula for simple interest is:

```
interest=principal*rate*term
```

So, using cell references, we have:

```
=C5*C7*C6
=1000*10*0.05
=500
```

To calculate simple interest in Excel (i.e. interest that is not compounded), you can use a formula that multiples principal, rate, and term.

This example assumes that $1000 is invested for 10 years at an annual interest rate of 5%. Simple interest means that interest payments are not compounded – the interest is applied to the principal only.

In the example shown, the formula in C8 is:

```
=C5*C7*C6
```

`interest=principal*rate*term`

The general formula for simple interest is:

```
interest=principal*rate*term
```

So, using cell references, we have:

```
=C5*C7*C6
=1000*10*0.05
=500
```

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