If an elevation 20 meters below sea level is represented by the number -20, which of the following can best be represented by the number 0? a. an elevation 20 meters above sea level. b. an elevation at sea level. c. an elevation 20 meters below sea level. d. an elevation 40 meters below sea level.

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

If 3x+8=3x+8 is it one solution or no solution

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?