Answer:
$17.14
Step-by-step explanation:
Given : 
To Find : Using the quadratic regression equation, what was the predicted profit in year 8
Solution :
Where y is profit and x is year
Substitute x = 8
So, Option D is true
Hence the predicted profit in year 8 is $17.14
Answer:
I think 0 -10 or mabe 0,-11
Yes because removing the common factor is important. There are a few steps, then you can factor by regrouping. Hope this helps.
Answer: 14,15,29...................
The second part = 1
the second part could be written sin²x.(1/sin²x), since cscx =1/sinx
hence 1 = 1
