Alice has a total of 12 dimes and nickels. She has 2 more nickels than dimes. Which equation represents the given problem situation?
c+ (c+2) = 12, where c is the number of nickels
c+ (c + 2) = 12 where cis the number of dimes
c+ 20 = 12 where c is the number of nickels
c+ 20 = 12 where cis the number of dimes
Done

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

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If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?