storage/size and address range/floating point-number representation

[saturn13]

i) to one decimal place, how many seconds of sound can be stored in a 1M-byte memory when the sound is quantized using:<br>the compact disk system(sampling rate = 44.1kHz, 16 bits per sample)?<br>the telephone system(sampling rate = 8kHz, 8 bits per sample)?<br><br>ii) for the following computer memory sizes, determine the equivalent denary size and the address range in hexadecimal that will access the whole memory(assuming in each case the first location is accessed at memory address 0).<br>16K<br>256K <br><br>iii) using the 32-bit ANSI/IEEE floating point-number representation, calculate what denary number is represented by the binary number<br>0011 1111 0100 0000 0000 0000 0000 0000<br>please show me the working out.<br>