How do you write 2.92 trillion in scientific notation form

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !

20 points! how many rotations does each tire make after traveling 600 feet? round your answers to the nearest whole number. the small tire would make about how many rotations? the large tire would make about how many rotations. small tire radius = 9in. the big tire radius = 30in.