Which of the following statements is true? All whole numbers are also natural numbers.
All natural numbers are also integers.
All integers are also whole numbers.
All real numbers are also rational numbers.

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

6 cm

step-by-step explanation:

5/20 so 25%

step-by-step explanation: