Pleeeaasse help me and my friend have been working on this for a bit We need the exponential function of this geometric sequence

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?

Me d is also an option but i couldn't get it in the picture

What is 60.9643790503 to 5 decimal