diff --git a/_lectures/lect18.md b/_lectures/lect18.md
index 9793ab7..87b4b21 100644
--- a/_lectures/lect18.md
+++ b/_lectures/lect18.md
@@ -1,7 +1,27 @@
 ---
-num: Lec 18
+num: Lec18
 lecture_date: 2020-03-04
 desc:
-ready: false
+ready: true
 pdfurl:
 ---
+
+# Questions
+* Question: Why would you just want to store one object in a tuple?
+* Ans: If you store stuff in a tuple, the object will not change.
+
+```python
+def printPet(aDict, key):
+  age = aDict[key]['age']
+  pettype = aDict[key]['type']
+  date = aDect[key]['date']
+  format_str = "{} is a {} who is {} old and we got it on {}"
+  print(format_str.format(key, pettype, age, date))
+
+'''
+Output:
+printPet(pets,'Cutie')
+Cutie is a poddle who is 3 months old and we got it on 03/04/2020
+'''
+```
+