From 600 meters above sea level, Katie took off in her helicopter and descended 400 meters. Which integer represents Katie's elevation now?

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?