How do you write the inequality for "Josephine sleeps more than 7 hours each night"?

1 Answer
Oct 9, 2015


t is duration of Josephine's sleep each night. The unit is hours.


You are comparing two things. They are "how long Josephine sleeps" and "7 hours".

We don't know how long Josephine sleeps, so let's make this a variable called t. We don't have a number for this.

The relationship between the two things is "more". According to the sentence, Josephine's sleep duration (t) is "more" than 7 hours.

So the inequality is as follows:
variable, relation, the other thing you are comparing to.

t, more, 7

more is #># in math language. Let's use t for sleep duration.

Then we get #t>7# .