Diego is selling raffle tickets for $1.75 per ticket. 1- How much money would Diego earn if he sold 20 tickets?
2-How much money would Diego earn if he sold 50 tickets?
3-Write an expressions that represents how much money Diego would earn if he sold "r" tickets.

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

Which one is true about the hexagons ?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?