Please i need help. Thanks in advance

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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?

Predict which statements are true about the intervals of the continuous function. check all that apply