About 70% percent of earth is covered in water, making 30% percent of earth potentially habitable by humans. Earth can be modeled as a sphere with diameter 12,700 km. There are 7.1 billion people in the world. What is the population density of potentially habitable earth?

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

If 24 people have the flu out of 360 people, how many would have the flu out of 900. choose many ways you could use proportion that david would use to solve this problem

What is the slope of the line shown below?