Answer: Your cell phone can hold 50 messages.
Explanation:
Let the total number of messages your phone can hold be x.
Given : The number of messages in your inbox = 44
And your inbox is 88% full.
We can write 88% ad 0.88 [to convert percent to decimal we divide it by 100]
Then, we have

Divide both sides by 0.88 , we get

Hence, your cell phone can hold 50 messages.