How to solve the problem 12w-3(4w-2)

"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?

Which of the following is the result of expanding the series

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41