How do i know what unit to use in my answer? ex. it is a 3- kilometer walk to the river. sam walks for 500 meters. then, she walks another 1050 meters.

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

If a revenue in total for a month was $9,950, fixed expenses were $9,000, and variable expenses were $300 what would be the total profit/ loss for the month?