F(x) = 1,200x + 400. What is the meaning of the y intercept of the function ?

see below

Step-by-step explanation:

F(x) = 1,200x + 400

The y intercept is the value of the function when the x value is o

When x = 0 the y value is 400

It is the initial value of the function

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