Please check
Fewer than 45 people attending d the show
X<45
A student had $5 but does not have enough to purchas three pair of socks
3x<5
At least 127 students attended the rock concert
127>x
No more than 50 students walked in the walkathon
X>50
x < 45
3x > 5
127 ≤ x
x ≤ 50