I just need somebody to explain how to solve it you don’t have to solve it if you don’t want too I just wanna learn how to do it You start driving west for 9 miles, turn right, and drive north for another 6 miles. At
the end of driving, what is your straight line distance from your starting point?
Round to the nearest tenth of a mile.

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

2x + 8

step-by-step explanation: