Answer:
x= 2
Step-by-step explanation:
so expand the left side of the equation
9x+9= 25+x
and then group like terms( subtract 9 from both sides and also do same with x.
9x-x= 25-9
8x= 16
divide by 8 on both sides.
x=2
Let x = Wally's age now
Then, 3x = Jose's age now
Wally's age 5 years from now = x+5
Jose's age 5 years from now = 3x+5
(x+5) + (3x+5) = 42
4x + 10 = 42
4x = 32 x = 8
Wally is 8 years old and Jose is 24.
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Answer: Choice 2. 
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Explanation:
The rule is that if
for some positive number k, then it can be written as the compound inequality
. This is a shorthand way of writing the two inequalities
combined together.
note:
is the same as 
From here, we replace k with 3
Therefore,
turns into
which breaks down further to 
The keyword "and" is important as we can't pick one or the other. We must pick both
and also 
Find x you mean?
substract both side by 2x
5x=-35
divide both side by 5
x=-7
->D