Hi there!
Ok i would love to answer you but do you have answer choices, or the other part of the question or a image?
~Jada
Answer:
Hi there!
The correct answer is: 
Step-by-step explanation:
First of all I want to clarify I used to the fourth identity to solve this problem.
The fourth identity is: 
Answer:
Since there is 10% off of the price, the new cost is 90% of the original. So we just multiply the price by 0.9
Step-by-step explanation:
7 = √49
8 = √64
So any positive integer between 50 to 63, both inclusive, have a square root between 7 and 8.