Multiply two decimals that the product should between 0 and 1

Pj is decorating pupcakes for rocky's birthday party. her color scheme is black, purple, and green. she will use this spinner to determine the color of sprinkles on each pupcake. which model shows the probability of randomly landing on each color?

On a piece of paper graph f(x)=5•(0.4)^x

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv