Final answer:
To find out after how many years the savings account balance will reach $6500 with a principal of $2000 and a simple interest rate of 6.25%, the simple interest formula is used and it is found that it will take 36 years for the account to reach the target balance.
Step-by-step explanation:
To determine after how many years the balance of Samantha's savings account will be $6500 with an initial deposit of $2000 at an annual simple interest rate of 6.25%, we use the formula for simple interest: interest = principal × rate × time.
In this case, the total interest earned when the balance reaches $6500 will be $6500 - $2000 = $4500. We can now set up the equation:
$5000 = $2000 × 0.0625 × time
By dividing both sides of the equation by ($2000 × 0.0625), we can solve for time:
time = $4500 / ($2000 × 0.0625)
time = 36 years
The balance of the account will be $6500 after 36 years.