4. Hannah is sending some song files to a friend. She has already attached 9.25 MB of music to her email. The email program she is using will not send a message above 20 MB. What is the solution of an inequality showing the number of additional MB (m) that she can still attach to her email?
?
9.25 + m ≤ 20
Therefore, the solution of the inequality is:
m ≤ 10.75