3. Express f 4.25 in a hypothetical 8-bit floating-point format following the principles of the IEEBE 754 standard. Suppose we have 1 bit for the sign, 4 bits for the exponent, and 3 bits for the fraction Consider Problem 3 again. Give examples of the expression of the following numbers: 4. a. 0.0 b. The maximum positive number that can be expressed. C. The minimum positive normalized number that can be expressed d. The minimum positive