Ben os travelling home to brimingham on the m1 and m42. both motorways have road works. he has a 50-50 chance of getting delay on the m42 and a 75% chance of being delayed on the m1.
what are the chances that he will not be delayed on his journey.

answer: sine

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