True or false:

a. all algorithms can be stated recursively.

b. some algorithms can only be stated recursively.

c. for most people, recursive algorithms are more difficult to discover and understand than nonrecursive algorithms.

d. all recursive algorithms must have an escape clause

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Write an equation for the function that includes the points (2,100)and (3,100)

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?