Answer:
For Q4 It's (A)
For Q5 it's (D)
Q4-
3(1+x) < x+6 --------- substitute 3
3+3x < x+6
-x. -x. ----- get rid of the same variable because we need to find only one x
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3+2x < 6
-3. -3. ------ to find x we move the 3 to the 6
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2x < 3
to find x ----> I get rid of the 2 by dividing it by itself
so---- 2x/2 < 3/2
{{{{{x < 1.5 }}}}
this sign "<" means smaller so x is smaller than 1.5
the possible values for x are ---- x={ 0, 1, 0.5.....}
So it's A
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for Q5.
the uncolored circle O means that the sign is either < or > but if it was colored • then it's ≤ or ≥.
Here, the uncolored circle is on the -3 with a line connected to it towards the largest numbers in the number line.
this shows that x is larger than -3
So, X > -3 ------- (D)