Ajet ski rental charges a flat rate of $75 ,plus an additional $60 per hour you want to spend less than $200. for how many hours can you rent the jetski for and still be under budget?

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: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.