A city planner is using simulation software to study crowd flow out of a large arena after an event has ended. The arena is located in an urban city. Which of the following best describes a limitation of using a simulation for this purpose? a) The model used by the simulation software cannot be modified once the simulation has been used.
b) The model used by the simulation software often omits details so that it is easier to implement.
c) Running a simulation requires more time to generate data from trials than observing the crowd exiting the arena at various events.
d) Running a simulation requires a large number of observations to be collected before it can be used to explore a problem.

Assume the existence of a bankaccount class. define a derived class, savingsaccount that contains two instance variables: the first a double, named interestrate, and the second an integer named interesttype. the value of the interesttype variable can be 1 for simple interest and 2 for compound interest. there is also a constructor that accepts two parameters: a double that is used to initialize the interestrate variable, and a string that you may assume will contain either "simple", or "compound", and which should be used to initialize the interesttype variable appropriately. there should also be a pair of functions getinterestrate and getinteresttype that return the values of the corresponding data members (as double and int respectively).

Use the keyword strategy to remember the meaning of the following word. the meaning for the word has been provided. write your keyword and describe the picture you would create in your mind. obfuscate: to make something so confusing that it is difficult to understand.

In a home that has 120 v service, there is an electric appliance that has a resistance of 12 ohms. how much power will this appliance consume? a. 10 w b. 120 w c 1200 w d. 1440 w