(5) A computer engineer converted an n-bit signed binary integer to decimal by hand and he wrote down his answer. He had assumed that the binary number was in signed magnitude format. He later discovered that the number was actually a signed two's complement number, so his original answer was wrong, but at that point he no longer had the orignal signed binary number. (a) Assuming V represents the answer he originally wrote down and that V was negative, give a formula based on V that will allow him to easily convert his answer to the correct one without actually having to first convert it back into binary. (b) Assuming he was using 8 bit numbers and that he originally wrote down 510, what was the actual decimal value of the number