Help me please. i need help its for math

When the value of the expression becomes undefined so it is the non-permissible replacement for the expression.

Step-by-step explanation:

Step 1:

To determine the non-permissible replacement we substitute x with the values of 6, 3, -3, and -6.

When ,

When ,

When ,

When , any value, when divided by a zero, becomes undefined.

Step 2:

The values of options a, b, and c all have numerical values.

When the value of the expression becomes undefined so it is the non-permissible replacement for the expression.

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

the answer is 2/54

step-by-step explanation: