Question

The inequality 2x+2≤x+4≤3x+4 means that x is in the closed interval [A,B]

Answer 1

Answer:

Step-by-step explanation:

2x+2≤x+4≤3x+4

means : 2x+2≤x+4  ...(1) and x+4≤3x+4

(1) : 2x-x≤4-2   so : x≤2....(*)

(2) :3x+4 ≥x+4    .... 3x-x ≥ 0    so: x≥0 ....(**)

by (*) and (**) : 0≤x≤2   so : A=0  and B = 2

Answer 2

Hope you can understand this easily