Answer please and explain

Which set represents the range of the function shown? {(8, 2), (6, 5), (4, 7), (11, −2)} {−2, 2, 5, 7} {4, 6, 8, 11} {(2, 8), (5, 6), (7, 4), (−2, 11)} {−2, 2, 4, 5, 6, 7, 8, 11}

"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?

3x + 4y = 5 x- 3y = -7 solve by substitution