Answer:
B. 
Step-by-step explanation:
5÷7 is also
--that divided sign is what the fractional bar represents in a fraction.
now multiply 
both are the same result, so your answer is Choice B.
All real numbers so the answer is D
Answer:
64*(1/4)^x
Step-by-step explanation:
64 is the starting number because it is given, and x represents how many rounds there are. 1/4 represents how much of the teams remain after each round.
Answer:

Step-by-step explanation:
Let's call the numbers "<em>tu</em>", where<em> t</em> is the tens digit and <em>u</em> is the units digit.
We can solve this by the "brute force" method — examining each number to see if it satisfies the conditions.


Answer: 2(x + 4)(x - 4)
Hope this helped!