Can someone help with my algebra question?

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

How do u write a function for the reflection across the y axis

The base of a prism is a regular hexagon with the perimeter of 78mm the height of the prism is 16mm what is the area of one of the rectangular faces of the prism?