a$)$ Determine an approximate cell voltage model as a function of y $=$ DoD and $[3]$

Ib for the cell

b$)$ What is the voltage range for the cell when used in an application with a DoD $[2]$

of $25\%$ to $75\%$ and a load ranging from no$-$load to a full load of $50$ C$?$

c$)$ What is the battery pack voltage range if in pack there are $192$ cells arranged in $[2]$

series per string with $4$ parallel strings?