Please help, I have no clue how to answer this.

49xy +34y - 72z. determine the degree of the polynomial

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

What are the soultion(s) to the quadratic equation 40- x^2=0