Afamily has a net income of $ 3100 per month and an entertainment budget of $ 399 per month. what percentage of their monthly income is spent on
entertainment?
% of their monthly income is spent on entertainment. (give your answer to the nearest 0.1 %).

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

One integer is 8 times another. if the product is 72, then find the integers

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?