The daily high temperature in a town in Alaska has been colder than -4°F for three weeks. Charlotte graphs the possible temperature, t, over the three week
period on the number line below.
-10
-5
0
5
10
Is Charlotte's graph correct?
Fill in the blanks to explain.
An inequality that can represent this situation is
Because -4
included in the temperatures, the graph should show a(n)
circle at - 4. The temperatures are
than - 4, so the
arrow will point to the
from-4. Therefore, Charlotte's graph
correctly represent the possible temperature over the three-
week period.

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