Grace order groceries worth $49.65. about how much should she spend for 12% home delivery charges?

The money spend for home delivery charges are $6 (an approximate value of $5.958).

Step-by-step explanation:

Given:

Groceries worth $49.65. Home delivery charges is 12%.

According to question:

12% of $49.65

So, the price of the delivery charges = $5.958.

Therefore, the money spend for home delivery charges are $6 (an approximate value of $5.958).

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