Justin and George bought some baked goods. Justin purchased 5 cookies for x dollars each and 4 doughnuts for y dollars each and spent $12 dollars on the baked goods. George purchased 1 cookie for x dollars each and 6 doughnuts for y dollars each and spent $5. The system of equations represents this situation. Which statement is true?

5x+4y=12
x+6y=5

Justin spent more on doughnuts than he did on cookies

Justin spent $4 on each doughnut

A cookie cost $1.50 more than a doughnut

George spent 6 times as much on doughnuts as he did on cookies

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

Graph the equation. select integers for x

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?