Answer:

Step-by-step explanation:
The angles of a triangle add to 180, add the angles and solve for x
You would rather look at the bar graph, easier to tell difference
Answer:
35+5x
Step-by-step explanation:
Pick each bracket and solve them separately. After solving, then you add them
the first bracket= (9x2-2x+7) = 25-2x ------- eqn 1
the second bracket= (4x2+7x+2) = 10+7x ---- eqn 2
Add eqn 1 and 2
= (25-2x) + (10+7x)
Grouping like terms,
= (25+10) + (-2x+7x)
=35+5x
Answers:
Domain: 
Range: 
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Explanation:
domain = set of all possible x inputs
range = set of all possible y outputs
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In this case, the domain is the set of all real numbers because the graph stretches forever to the left and right. There aren't any gaps, holes, jumps, etc to worry about. Any real number works as an input.
We can say x is between
and
and write
That turns into the interval notation 
The curved parenthesis are <u>always</u> used with either infinity because we cannot reach them.
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The range is the same story, but with the y values this time. The graph stretches forever upward and downward due to the arrow.
If it peaked at y = 4, then the range would be
, but instead the graph goes beyond y = 4 because of that upward arrow.
Answer:
the value '6' in 461 is in tens means 6 is 60 and the value '3' in 307 is in hundreds means 3 is 300
difference:-
6 is in tens forms while 3 is in in hundreds form.
I hope it helps.