Complete the tables for the following functions and find the values of m and n.

For $x = 0$:

$$y = \frac{1}{2}(0) + 4 = 0 + 4 = 4$$

For $x = 2$:

$$y = \frac{1}{2}(2) + 4 = 1 + 4 = 5$$

For $x = 3$:

$$y = \frac{1}{2}(3) + 4 = \frac{3}{2} + 4 = 1.5 + 4 = 5.5$$

For $x = 50$:

$$y = \frac{1}{2}(50) + 4 = 25 + 4 = 29$$

For $x = 75$:

$$y = \frac{1}{2}(75) + 4 = 37.5 + 4 = 41.5$$

For $x = 100$:

$$y = \frac{1}{2}(100) + 4 = 50 + 4 = 54$$

Completed table for d):

$x$	$y$
0	4
2	5
3	5.5
50	29
75	41.5
100	54

For $x = 1$:

$$y = -4(1) - 3 = -4 - 3 = -7$$

For $x = 3$:

$$y = -4(3) - 3 = -12 - 3 = -15$$

For $x = 5$:

$$y = -4(5) - 3 = -20 - 3 = -23$$

For $x = 7$:

$$y = -4(7) - 3 = -28 - 3 = -31$$

For $x = 27$:

$$y = -4(27) - 3 = -108 - 3 = -111$$

For $x = 47$:

$$y = -4(47) - 3 = -188 - 3 = -191$$

Completed table for e):

$x$	$y$
1	-7
3	-15
5	-23
7	-31
27	-111
47	-191

Assuming $m$ is the first missing $y$ value in table d) and $n$ is the last missing $y$ value in table e):

$$m = 4$$ $$n = -191$$

The values are:
$m = \boxed{4}$
$n = \boxed{-191}$