Question

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

where A is ...... and B is.......

Answer 1

Hope you can understand this easily

Answer 2

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