Miles and Billy drive their motorcycles for the same amount of time. Miles' motorcycle travels 184 miles at a speed of 46 mph, while Billy's motorcycle travels 188 miles at a speed of 47 mph. For what amount of time were Miles and Billy traveling?

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

answer: your answer is c

step-by-step explanation:

the answer for the question that you are asking is 4