HELPP PLEASE ITS DUE IN A COUPLE OF MINUTES AND IM HAVING TROUBLE

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?