The walters family bought 3 ham sandwich and 4 fruit cups for lunch. each sandwich cost $4 and each fruit cups cost $2. how much did the family spend on lunch?

What is the product of the radical expression. (7-2square root) (8+2 square root)

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

Define multiplicative inverse. give an example of a number and its multiplicative inverse.