Answer:
7a+2a=9a
Step-by-step explanation:
You distribute the a to each of the numbers in the parenthesis. Which means that you multiply. You should be left with a 7a+2a. Then since 7+2=9, your answer is 9a. So answer 1 is correct because they do these exact steps.
The answer is 2 y-5=-4/3(x-2)
Answer:
where is the graph
and what is your question
could you explain
Answer:
680 oranges
15 levels
Step-by-step explanation:
Add 2, add 3, add 4, add 5.....
1+3+6+10+15+21+28+36+45+55+66+78+91+105+120=680
15 levels
He can’t add a 16th level, because it would have 136 oranges, which would put him over 800.
Answer:

as 
and
as 
Step-by-step explanation:
We can see it is cubic polynomial with positive leading coefficient.
Degree of polynomial is 3 and leading coefficient +3
End behavior depends on two parameter degree and leading coefficient.
It would be negative infinity as x approaches to negative infinity and positive infinity as x approaches to positive infinity.
We can see in graph also. Please take a look attached graph.