Answer:

Step-by-step explanation:
Regular coordinates (x, y)
Polar coordinates (r, φ)

We have the point

Substitute:

Y=1/2x is the equation of the line.
Answer:
a) It cannot be concluded at the 99% confidence level that there is actually a difference between the true mean comfortable room temperatures for the two groups.
Step-by-step explanation:
Answer :
$52.50 - x
Step-by-step explanation:
8.75*6 = 52.5
Price of the book = x
$52.50 - x