What is the main idea? What tone does the author use?

PLEASE ANSWER

Paint should be stored and mixed in an osha-approved room with all of the following, except: a) adequate ventilation b) ventilation hoods c) unshielded electrical devices d) fire extinguishers

Which is an advantage to using nonrenewable resources? a. they can be cheaper. b. they can have a lower impact on the environment. c. they can be used up rapidly. d. they can contribute to global warming.

Susie ran a race. she ran 55 miles an hour, and the race took her tt hours to complete.