Answer:
-8n+7
Step-by-step explanation:
the difference between the values is 8, as it decreases by 8, it withh be 8n
It does not start at 8 though, so you do 15-8 to find the different which is added on which is 7 in this case
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Since f′>0, f is strictly increasing, so if f(0)=0, you will have f>0 if x>0 and f<0 if x<0. There is no need to consider the second derivative.
Answer: a
