can someone help me with halving the interval, i know the theory, method, etc but i dont know how to arrive at the final answer when it asks to solve to two decimal places.

e.g Question:

Use the method of bisection to solve the following equation to 2 decimal places given that:

x^3 - 3x - 20 = 0 has a root between 3 and 3.1

the answer is 3.08.

thanks