Solve for u.
-6 +u = 4

Me because some of question i don’t understand

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?