Answer:
Option D is the correct answer
Step-by-step explanation:

97 is not a pefect square. You can obtain the square root of 97 using a calculator.
Using a calculator, square root of 97 is approximately 9.85
Answer:
30.06
Step-by-step explanation:
The question states WHAT DID THEY PAY BEFORE INSTALATION CHARGES.
So 30.06$
588.34-555.28=30.06