During the first nine months of the year, it rained an average of 3 inches each month.
During the last three months, it rained
a total of 21 inches. Mark beside the
number sentence used to find the average
rainfall per month .

You coordinate volunteers for litter cleanup in local parks. your spreadsheet lists drivers and the number of seat belts in each driver’s car. the spreadsheet calculates the number of drivers (d) and the total number of seat belts (s). you want to know the maximum number of volunteers, besides drivers, that can be transported to the park in a single trip given that each person must have a seat belt of their own.