Update ch04 exercise copy

Author: dbader

ch04-strings-and-string-methods/7-streamline-your-print-statements.py ch04-strings-and-string-methods/7-streamline-your-prints.py

@@ -1,12 +1,12 @@
-# 4.7 - Streamline Your Print Statements
+# 4.7 - Streamline Your Prints
 # Solutions to review exercies
 
 
 # Exercise 1
 weight = 0.2
 animal = "newt"
 
-# Concatenate a number and a string in one print statement
+# Concatenate a number and a string in one print call
 print(str(weight) + " kg is the weight of the " + animal + ".")