WHAT IS THE ANSWER TO 9-3:3= ?

I NEEDD HELP I ONLY GOT 2 MIN I WILL GIVE

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

Need on this one asap im almost done with this subject