Solve 3/5x = 15
Question 4 options:

a)

25

b)

9

c)

5

d)

75

25

Step-by-step explanation:

Do 5 X times 15 = 75 x

Do 75x / 3 = 25

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