Let
m -----> the number of articles that Mustafa may have written for the School newspaper
h ----> the number of articles that Heloisa may have written for the School newspaper
g ----> the number of articles that Gia may have written for the School newspaper
so
The inequality that represents this situation is given by
and we have that
substitute equation 1 and equation 2 in the above inequality
Solve for m
The answer is m>8