Question

Can someone please help me?

For the graph below, what should the domain be so that the function is at least 600?

http://learn.flvs.net/webdav/assessment_images/educator_algebraI_v20/09_00_g03_q01.gif

0 ≤ x ≤ 20
−10 ≤ x ≤ 30
x ≥ 0
All real numbers

Answer 1

I'm not able to see your graph, since it is a message error

Answer 2

Okay I'll retry~

Answer 3

ok! I see it

Answer 4

from your graph, we have to search for x-values such that f(x)> or equal to 600

Answer 5

So like, you plug the equations in to see if they fit or-?

Answer 6

not exactly, here is my drawing:

Answer 7

as we can see if x>0 and x<20, its value through f, namely f(x) is greater or equal than 600

Answer 8

in particular, we have:
f(0) = 600
f(20)= 600

Answer 9

So, it would be A?

Answer 10

yes!

Answer 11

Thank you so much!

Answer 12

:)