I need help with 20-26 evens

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

The variable in a relation who’s value depends on the value of the independent variable is called what?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?