The easternmost point in Canada is Cape Spear, Newfoundland, at 82o W. The westernmost point is the Yukon-Alaska border at 141o W. The earth is assumed to be a sphere. of 6400 km radius. Determine the distance from Cape Spear to the Yukon-Alaska border.

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