In mathematics<span>, a (real) </span>interval<span> is a set of real numbers with the property that any number that lies between two numbers in the set is also included in the set. For example, the set of all numbers x satisfying 0 ≤ x ≤ 1 is an </span>interval<span> which contains 0 and 1, as well as all numbers between them. So this should help you solve your problem.</span>
I thinks that the answer is 9
ask your teacher.
use a calculator.
Use math tutoring for this module.
Pay more attention to the lecture.
