Final answer:
The interest accrued in 4 years on a $20 investment at a simple interest rate of 2.875% is $2.875.
Step-by-step explanation:
To calculate the interest accrued in 4 years on a $20 investment at a simple interest rate of 2.875%, you can use the formula:
Interest = Principal x Rate x Time
Interest = $20 x 2.875% x 4 years
Interest = $2.875
Therefore, the interest accrued in 4 years would be $2.875.