Look at the following numbers: −2, −1, 0, 1

Which pair of numbers has a sum of zero?

A. −1, 0

B. 1, −1

C. −2, 0

D.−2, 1

B

Step-by-step explanation:

(-1)-1=0 Any negative number minus the same number but positive is going to equal 0. I hope this helps!

B

Step-by-step explanation:

1 - 1 = 0

It might be B but I'm not sure.

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

provide more details to solve it

step-by-step explanation: