Consider a sequence whose first five terms or 1/2 1/ 4 1/8 1/16 1/32 which function can be used to determine the NTH term of the sequence. F(n)=-2n F(n)=1/2n. F(n)=(1/2) ^-n. F(n)=2^-n

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?