Let
x-------> the length of the beat in seconds
we know that
------> inequality that represent the beats length
the solution is the interval--------> (15,∞)
the domain is all real number greater than
<u>Find the possibles beat lengths that satisfy the inequality</u>
a)
substitute in the inequality
-----> is true
therefore
is a possible beat length
b)
substitute in the inequality
-----> is true
therefore
is a possible beat length
c)
substitute in the inequality
-----> is true
therefore
is a possible beat length