What is the answer to 4 and 5? I need help quick.

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 polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12