A person who looks after our teeth is called

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

Arectangular yard has area 96 square feet. if the width of the yard is 4 feet less than the length

Aiko jumped rope for 20 min and stopped at 8: 05 when did she start