n) 3 + 7x ≤ 52
7x ≤ 49
x ≤ 7
x = {0,1,2,3,4,5,6,7}
o) 5x - 23 ≥ 22
5x ≥ 45
x ≥ 9
x= = {9,10,11,...}
p) 6x - 18 ≥ 72
6x ≥ 90
x ≥ 15
x = {15,16,17,18,...}
s)10ˣ < 100 000
10ˣ < 10⁵
x < 5
x = {0,1,2,3,4}
t)
2²ˣ⁺¹ ≥ 128
2²ˣ⁺¹ ≥ 2⁷
2x + 1 ≥ 7
2x ≥ 6
x ≥ 3
x = {3,4,5,...}
u)
4³ˣ⁻⁵ > 256
4³ˣ⁻⁵ > 4⁴
3x - 5 > 4
3x > 9
x > 3
x = {4,5,6,...}
