What is the area of the shaded figure below?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

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?