Which of the following equals 8 when you evaluate f(2) ? select all that apply

a) f(x)=2x+1

b) f(x)=3x-2

c) f(x)=x(5x-2)

d) f(x)=3x-2x+4

e) f(x)=|x-8|+2

E)

Step-by-step explanation:

We will check each of the given choices by finding of the given functions.

In order to find , we plugin in the function.

A)

B)

C)

D)

E)

  [Since absolute value of any number is positive]

So, the function in E has value =8 for

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