Question 581280
A) Your correlation coefficient is so small that there is no correlation (I got {{{r^2=0.015}}}). Obviously gross income does not depend on budget. In other words, you cannot expect to improve gross income by manipulating budget. Budget seems to have no effect.
B) The equation predicts that a lower budget movie will produce greater gross income. I got a slightly different regression line, but with x=30 (for a $30,000,000 budget), the equation you have gives you
y(30)=123.44-0.536(30)=107.36, predicting a gross income of $107,360,000.
C) Because the correlation coefficient is so small, and the slope is so flat, the regression line has no predictive ability. I don't think anyone would use a trendline with a correlation coefficient of less tan 0.5 to predict anything, and a flat slope says y does not depend on x, anyway.