The value of 7° ? 1. 70 ( ) 2. 7 ( ) 3. 0 ( ) 4. 1 ( )

Could somebody me with this radical simplification?

Which expression is equal to (f+g)(x)?

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project