15.8
I think this is the answer
Answer:
Step-by-step explanation:
Hello, because of the end behaviour it means that the leading coefficient is negative so we can construct such polynomial function as below.

Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Answer:
7x+29
Step-by-step explanation:
First take away ( ), so it would be 5x+15+2x+14. Then, just add the alike terms together. 7x+29
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