If 14 gallon of paint covers 13 of a wall in Luna's bedroom, how many gallons of paint does she need to cover 1 wall?

Can someone explain the elimination method to me for this problem?

On average a herd of elephants travels 10 miles in 12 hours you can use that information to answer different questions drag each expression to show which is answers

Plz ( true - false) all triangles have interior angles whose measure sum to 90.