Which of these is an equivalent expression for 2-3 that uses positive exponents?

The answer is C. 

In order to make an exponent positive, you just switch it to the opposite part of the fraction. So, for example, 

x^-3= 1/x^3

or 

1/x^-5 = x^5/1

You just switch it to the opposite part of the fraction, and make the exponent positive.

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Step-by-step explanation:

2

step-by-step explanation:

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