For the graph below, what should the domain be so that the function is at least 200?

graph of y equals minus 2 times the square of x plus 30 times x plus 200

-5 ≤ x ≤ 20
0 ≤ x ≤ 15
x ≥ 0
all real numbers

Question

For the graph below, what should the domain be so that the function is at least 200?

graph of y equals minus 2 times the square of x plus 30 times x plus 200

 -5 ≤ x ≤ 20
 0 ≤ x ≤ 15
 x ≥ 0
 all real numbers

leahhhmorgannn · Answer

attachment

leahhhmorgannn · Answer

@JackofallTradez

jackofalltradez · Answer

Do you have any ideas? I can explain if you don't ^_^

leahhhmorgannn · Answer

No ideas. I marked a random answer, which I don't why I did. But, no actual ideas.

jackofalltradez · Answer

OK
The graph reaches the y-coordinate of 200 at the x-coordinate 0. The arc continues, and again goes through y of 200 at x of 15. According to that data, x must be equal to or greater than 0, and equal to or less than 15 to reach y of 200 or greater.
Does that help?

leahhhmorgannn · Answer

Yes, actually. That helps a lot.

jackofalltradez · Answer

I'm glad I could help ^_^

anonymous · Answer

@JackofallTradezz, can you explain a bit??