Which set is a function?

a)
{(0,3), (3,0), (0,4), (4,0)}

b)
{(0,2), (2,0), (4,6), (6,4)}

c)
{(2,6), (3,6), (4,6), (2,0)}

d)
{(6,2), (2,0), (4,6), (6,4)}

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

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

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)