Robert is trying to determine the additional cost for making each special order . For each special order cupcake , write an equation that can be used to determine the cost , y, of the extra ingredient for making dozen of that cupcake .

y = 12x

Step-by-step explanation:

Given that:

y = cost of making a special order cupcake

A dozen of special order cupcakes = 12 pieces

Let the cost of extra ingredient for making a special order cupcake = x

Hence the cost y of making a dozen of such special order will be :

y = extra cost per order * number of orders

y = 12x

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204