Answer:
7 yards yards per second.
Step-by-step explanation:
you divide 21 by three
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Slope Formula:

Step-by-step explanation:
<u>Step 1: Define</u>
Point (-7, 0)
Point (-6, -10)
<u>Step 2: Find slope </u><em><u>m</u></em>
Simply plug in the 2 coordinates into the slope formula to find slope<em> m</em>
- Substitute [SF]:

- Subtract/Add:

- Divide:

My apologies this is only for a reward to ask questions myself .
I would say B. The mean is a good measure of central tendency.
I hope this helps!
I'm pretty sure it would be 25