In a hotel, visitors take the elevator from the first floor to their room on the middle floor. later, they return to the elevator and take it up two floors to see the workout room. then they go down four floors to visit their friends' room. finally, the entire group travels up eight floors to the top floor of the hotel. how many floors does the hotel have?

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?