Find the value of the angle marked x in the diagram above

The line \(3y + 6x\) = 48 passes through the points A(-2, k) and B(4, 8). Find the value of k.

Tickets for the school play were priced at ₦520.00 each for adults and ₦250.00 each for kids. How many kids' tickets were sold if the total sales were ₦171,000.00 and there were 5 times as many adult tickets sold as children's tickets?

Solve the logarithmic equation: \(log_2 (6 - x) = 3 - log_2 x\)

Calculate the area of the composite figure above.