The simple interest is given by the following formula:

Where "P" is the deposit, "r" is the interest rate in decimal form, and "t" is time. Now, we plug in the values:

Now, we solve the operations:

therefore, the interest is $1750.
To deteremine the future value we add the deposit to the interest, we get:

Now, we plug in the values:

Therefore, the future value is $8000