The table gives the number of songs purchased from My Tunes at different prices per song.

a. Find the equation of the linear regression line. Round the slope and the y-intercept to the nearest hundredth.
b. What is the slope of the linear regression line?
c. What are the units of the slope when it is expressed as a rate?
d. Based on the linear regression line, how many thousands of downloads would My Tunes expect if the price were changed to $0.45? Round to the nearest integer.
e. Is your answer to part d interpolation or extrapolation? Explain.
f. Find the correlation coefficient to the nearest hundredth.
g. Describe the correlation.