a number was subtracted from 7 and that difference was the divided by 2. after which the quotient was multiplied by 4. this product was 4. what was the difference

Difference is 9-7 = 2

Given number is 9

Step-by-step explanation:

Assume;

Given number is x

So,

Subtracted from 7;

x - 7

Divided by 2

(x-7)/2

Multiplied by 4

[(x-7)/2]4

Product was 4

[(x-7)/2]4 = 4

x-7 = 2

x = 9

Given number is 9

Difference is 9-7 = 2

answer: 12

step-by-step explanation:

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