An apartment building has the following distribution of apartments: 1 bedroom 2 bedroom 3 bedroom 1st floor 3 0 1 2nd floor 2 2 2 3rd floor 1 4 1if an apartment is selected at random, what is the probability that it is not on the 2nd floor or has 2 bedrooms? a) none of the given answerb) 1/9c) 14/16d) 1/3

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Ahmed plans to add a rectangular sunroom to his house. the sunroom will have a length of 14 feet and a width of 10 feet, and the construction will cost $40 per square foot. how much more would the sunroom cost if it’s width were increased to 12 feet?