If z = x2 − xy + 8y2 and (x, y) changes from (1, −1) to (1.04, −1.05), compare the values of δz and dz. (round your answers to four decimal places.)

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)

If a=0.333333 and b=0.55555, what is the value of a+b