Question

if the replacement is{0,1,2,3,4,5,6}, find the solution set for each equation(i) x<4​

Answer 1

Step-by-step explanation:

A. x+1<9

x<9−1⇒x<8

x∈[0,7]

B.3x−4≤20

3x≤24⇒x≤8

x∈[0,8]

C.5+2x>10

2x>5

x>

2

5

,x∈[3,∞]

D.10<x+5<21

5<x<16

x∈[6,15]