A gift shop is selling 4 bags of jelly beans which weigh 4.3 ounces, 4.8 ounces, 5.7 ounces, and 7.8 ounces. Which expression can be used to find the mean (average weight) of the 4 bags of jelly beans?
To find the mean of a set of numbers, add all the numbers together and divide by the number of numbers ...
+449 
