[Dogs: 6.99 * 10^7 Cats: 3.61 * 10^7 Birds: 0.38 * 10^7 ] Now that the three numbers have the same power of 10, find the sum using the Distributive Property.

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

its line 2 i just added the rest or else it wouldn't let me answer

391.6 is the correct answer