math
posted by hudson .
what is the average weekly food expense of the johnson family during a 4week period in which they spent $72.84,$61.20,$75.48,and $68.76 for their weekly grocery shopping? 1] $69.07 2] $69.57 3] $71.07 4] $72.51 5]$73.04 please help me please

Average means that you add up the amounts and then divide by the number of amounts you added. In this case you add the following, and then divide the total by 4.
72.84
61.20
75.48
68.76
Remember: Average means add and then divide. 
help please thanks

72.51