Which arrangement shows 31/8, 3.7, 3 3/4, and 3.89 in order from least to greatest?

To compare the numbers \( \frac{31}{8} \), \( 3.7 \), \( 3 \frac{3}{4} \), and \( 3.89 \), let's convert them to decimal form:

1. \( \frac{31}{8} = 3.875 \) (since \( 31 \div 8 = 3.875 \))
2. \( 3.7 \) is already in decimal form.
3. \( 3 \frac{3}{4} = 3.75 \) (since \( 3 + \frac{3}{4} = 3 + 0.75 = 3.75 \))
4. \( 3.89 \) is already in decimal form.

Now listing the values in decimal:
- \( 3.7 = 3.700 \)
- \( 3.75 \)
- \( 3.875 \)
- \( 3.89 \)

Now arranging these values from least to greatest:
1. \( 3.7 \)
2. \( 3.75 \) (or \( 3 \frac{3}{4} \))
3. \( 3.875 \) (or \( \frac{31}{8} \))
4. \( 3.89 \)

So the order from least to greatest is:
- \( 3.7, 3 \frac{3}{4}, \frac{31}{8}, 3.89 \)

Therefore, the correct response is:
**3.7, 3 3/4, 31/8, 3.89**
**3.7, 3 and 3 over 4, 31 over 8, 3.89**