Thomas has a bag with $7$ green marbles, $5$ blue marbles, and $4$ red marbles. For each part below, if the marble selected is replaced before the next marble is drawn, find the probability for the given draw. Write your answer as a fraction, as a decimal, and as a percent.  

1. A red marble?

   Hint (a):

   Remember that probability can be written as a fraction:

   $\large\frac{\text{number of successful outcomes}}{\text{number of possible outcomes}}$

   More Help (a):

   How many red marbles are there? How many total marbles?

   Answer (a):

   $\frac{4}{16}=\frac{1}{4}$

2. A red or a green marble?

   Hint (b):

   See part (a).

3. An orange marble?

   Hint (c):

   How many orange marbles are in the bag?