Does anyone know how to do this i am not sure how to solve this !

To make a monster appear large in a movie, a human actor wore a costume and walked through a scale model of a city. the scale used was 1 inch = 15 feet. the actor is 60 inches tall. how tall does the monster appear in the movie? question 5 options: 720 feet 75 feet 4 feet 900 feet

In the diagram of circle a what is m

What is the value of x when x + 7 = 21?