28. 6x+42-20=6x
42-20=0
42-20 gives you 22
22=0
Statement is false
30. -2x-4=-2x-3-1
-2x-4=-2x-4
Statement is true because both sides are identical
32. 2x+8-5=2x+3
8-5=3
3=3
Statement is true for any value of x
34. 3x+(x+4)=18
3x+x+4=18
4x+4=18
4x=18-4
4x=14 (next divide both sides by 4)
x= 7 over 2
7/2
We know that :
If f(x) and g(x) are Two Functions Defined under same Domain, then Composite Function : (f o g)(x) = f(g(x))
Given : f(x) = 
and g(x) = 
⇒ (f o g)(x) = f(g(x))
⇒ 
⇒ 
1st Option is the Answer
Answer:
C
Step-by-step explanation:
Everything else can be simplified to 2/5, except for 9/20
