Memory

$($a$)$ How many bits are required to address a $128-$Mega$-$location memory, i$.$e$,$ what should the number of bits of the memory address be in order to access a $128MB$ memory?

$($b$)$ How many locations of memory $($in terms of the number of bytes$)$ can you address with $14-$bit memory address?

$($c$)$ Assume $C$ is a character array with $20$ elements stored in memory and its starting memory address is in X$9.$ What is the memory address for element $C[7]?$

$($d$)$ Assume A is an integer array with $20$ elements stored in memory and its starting memory address is in X$6.$ What is the memory address for element $A[9]?$

$($e$)$ Write at least five different ways to assign $0$ to register $x6.$