Sandy works at a clothing store. she makes $7 per hour plus earns 10% commission on her sales. she worked 72 hours over the last two weeks and had a total of $2,574 in sales before taxes. which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?

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

What is the area of the trapezoid shown ?

Interpret the following expression (5y^2-7)^3/(2y)^2