Answer : A x > 13
The number 13 is less than the number of hours Nathan's volleyball team trains in a week.
Let the number of hours in a week is x
Question says 13 is less than the number of hours
So we can write it as 13 < x
We always put the variable in the left. When we switch the variable then we reverse the inequality sign.
13 < x can be written as x > 13