I really need help on this so I would appreciate if any of you guys could help me

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

final total: 63

step-by-step explanation:

60 times sales tax

60 times 0.05

3

60 + 3

63

her total is 2

  -3+5=2