What is the domain of the function?
the first photo is the function the following photos are the options
answer fast im being timed

The index of the root 3 is an odd number, then x can be either positive or negative, then 
Domain of the function = R = (-Infinitive, Infinitive)
R. All real numbers

First option -Infinitive < x < Infinitive

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post