Question 31273
Assume that the number of Seniors members = x;
and the number of Junior members = y

Based on the problem,
x > y (because number of Seniors is more than the number of Juniors)
(x+y) >=7
(x+y) <=10

The linear inequalities are:

(x-y) >0
(x+y) >=7
(x+y) <=10

Hope this helps.