Acity planner needs to make a model of the city. in real life, the city courthouse is 60 feet tall. a building across the street is 80 feet tall. if the model courthouse is 1 foot tall, how tall is the model building across the street?

The model of the building across the street would be 4/3 ft which is approximately 1.3334 ft tall

Explanation:
We are given that the planner models a 60 ft tall building to be 1 foot. Since the planner would be using the same scale, we can simply use cross multiplication to find how tall 80 ft will be on the model as follows:
60 ft is modeled as 1 foot
80 ft is modeled as ?? ft
the model of the building across the street would be = (80*1) / (60)
                                                                                   = 4/3 ft = 1.334 ft tall

Hope this helps :)

And a) oxygen i believe

Answer the air near the ground cools to its dew point