Answer the Questions That Follow This SPSS Output

Answer the questions that follow this SPSS output:
 
The dependent variable is fallGPA (student's GPA after the fall semester). The independent variables are sizeHS (the size of their high school graduating class) and SAT (their best SAT score).
A) What is the value of the multiple correlation (that is, the correlation between the dependent variable and the set of independent variables)?
B) What is the value of the coefficient of determination?
C) Of the two independent variables, which has the stronger net effect on the dependent variable?
D) Write out the regression equation. (You may use Y and X's in the regression equation or, in place of the Y and X's, you may use variable names.)