10. Which expression is equivalent to 1.6x-4.8? (3 Points)
0.4(4x – 1.2)
0.2(8x + 24)
0.8(2x - 0.6)
0.8(2x – 6)

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

care to share were the trapezoid shown is ?

well

44-3-3-3=35

35+4+4+4+4=51

so the ansewr would be 51 degreesat 7: 00