Please help, im not very good it this stuff and I need this assignment done

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?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the