Answer:the original price is $680
Step-by-step explanation:
1/4(x)=170
4×1/4(x)=4×170
x=$680
Down because the slope is negative
Answer: -7n^2-6n-8
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
See attachment for graph
Required
The equation of best fit
First, we pick two corresponding points on the graph,
We have:


Calculate slope (m)

This gives:



The equation is the calculated using:

This gives

Open bracket

