Please tell fast plz.

An atom's diameter is about 0.1 nanometer (1×10-9m), and a human hair is about 1×10-3m. how many times greater is a human hair than an atom's diameter? sorry pushed wronf button but this is math

Jason typically uses the internet to buy various items. it the total cost of all of the items ordered, at one time, is $250 or more, then the shipping and handling is free, otherwise the shipping and handling is $15 per item. design an algorithm that prompts jason to enter the number of items ordered and the price of each item. (remember cost = number of items order times price) the algorithm then outputs the total billing amount including shipping and handling. your algorithm must use a loop (repetition structure) to get the number and price of each item. write this in algorithm format not program code format.

Select all that apply. select all functions of an operating system. displays a gui. allows you to multitask. allows you to use the software that you want to use. allows you to edit images. coordinates the interaction of hardware and software. defrags the hard drive. allocates the computer's resources. saves data. retrieves files. keeps confidential documents secure. copies information from one document to another.