Homework: Data Representation

$1)1)$ How are the following decimal numbers represented in $16-$bit hexadecimal?

For example: $1$A$5$C

a$.25$ base $10$

b$.157$ base $10$

c$.325$ base $10$

$2)$ How are the following unsigned hexadecimal numbers represented using $16-$bit binary?

For example: $1111000011110000$

a$.9$C base $16$

b$.1$F base $16$

c$.0$C base $16$