A$)$ Use the data provided to develop the regression equation for estimating the user ratings of Suicide Squad that is suggested by the scatter diagram in part $($a$).$ Use x$1$ for age. $($Round your numerical values to four decimal places.$)$

B$)$Include the user rating of The Secret Life of Pets as an independent variable in the regression model developed in part $($b$).$ Use x$2$ for user rating of The Secret Life of Pets. $($Round your numerical values to four decimal places.$)$

C$)$ Holding the user's age constant, a one$-$point increase in the user's rating of The Secret Life of Pets coincides with an estimated $-$point $---$Select$---$increase$$decrease in the user's rating of Suicide Squad.

D$)$ Suppose a $31-$year$-$old user gave The Secret Life of Pets a rating of $4.$ Use the superior model from part $($d$)$ to predict that user's ratings of Suicide Squad.