Help a girl out plz...(I didn't study)
What are the x-intercept(s) of the graph?
A. (5, 0)
B. (0, 0)
C. (-3, 0) and (3, 0)
D. (0, 3) and (0, -3)

B. (0,0)

Step-by-step explanation:

It's the only place that the function touches the x-axis

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