For this case we must solve the following inequality:
[tex]\frac {M + 1} {2}> 4[/tex]
We multiply by "2" on both sides of the inequality:
[tex]\frac {M + 1} {2} * 2> 4 * 2\\M + 1> 8[/tex]
We subtract "1" on both sides of the inequality:
[tex]M + 1-1> 8-1\\M> 7[/tex]
Thus, the domain of M is given by all the numbers greater than 7.
Answer:
[tex]M> 7[/tex]
