What is the volume of a box that can fit exactly 128 of these cubes with 1/2 inches sides

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.

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.

What is the answer to this equation? and if you can, find a way to show your work.