# For her cell phone plan Heather pays $30 per month plus$0.05 per text. She wants to keep her bill under $60 per month. What inequality represents how many texts Heather can send each month while staying within her budget? ##### 1 Answer Mar 29, 2018 #### Answer: The monthly cost is $30 + 0.05 n$if we call the number of texts $n$. Heather wants to keep this less than $60$, so the inequality is: $30 + 0.05 n < 60$#### Explanation: Note that we can also subtract $30$from each side: $0.05 n < 30$We can also divide both sides by $0.05$: $n < 600\$

This is the most useful inequality, since it tells Heather she needs to send fewer than 600 texts per month, or about 20 per day.