What computing and payment model does cloud computing follow?

cloud computing allows users to computing resources and follows the payment model.

to buy
own
rent
sell

the pay-as-you-go
pay-anytime-anywhere
pay-once-use-multiple-times

Radar devices are used by law enforcement to be sure that individuals are driving safely. they tell the officer how fast the vehicle is traveling at that specific moment in time. the radar device determines the vehicle's a. instantaneous speed. b. acceleration. c. maximum velocity. d. average speed.