Graph the solution(s) to each of the following on a number line.
a. x−4=0 and 3x+6=18
b. x< 5 and x≠0
c. x≤−8 or x≥−1
d. 3(x−6)=3 or 5−x=2
e. x< 9 and x> 7
f. x+5< 7 or x=2