O A. yis all real numbers.
O B. y> 0
C. O sys 8
D. -65 x<6

C. 0 ≤ y ≤ 8

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

According to the graph, we see that the line's y-value span from 0 to 8. Since both are closed dots, they are inclusive in the range:

[0, 8] or 0 ≤ y ≤ 8

correct answer:

b.(19,-2)

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