Fill in the blanks to complete the equation that describes the diagram. -3+___=___

Link:
https://docs. google. com/document/d/1-mtTJDHy0TAQqLxe2OT kifAPupG3off2T8YWfp_KQQg/edit?usp=s haring

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?

There were 32 volunteers to donate blood. unfortunately, nn of the volunteers did not meet the health requirements, so they couldn't donate. the rest of the volunteers donated 470 milliliters each.