Please help me in super confusedSelect three ways in which invasive species are a threat to ecosystems. A. Prey on native species
B. Outcompete native species
C. Increase biodiversity
D. ause diseases
E. Benefit food webs

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?