Please give a detail steps lead to these answer, thanks

Theoretical Assignment 1: Suppose we have a decimal number (-28.91)10 1. Convert it to binary number, show the specific procedures, and truncate the result with accuracy to 4 decimal places. (Points: 25) 2. Convert your binary number back to its corresponding decimal number, show the specific procedures, and evaluate the relative error. (Points: 15) 3. Use online calculatorl to present the floating point representation of (28.91)10 in a 32-bit computer. Show the specific sign(s) (1-digit), exponent(n) (8- digit), and Mantissa (f) (23-digit). (Points: 10)