Answer:
So first you have to do 12-2 since it's in parenthesis. It is 10. 5+4 is 9, and 9 times 10 is 90. 3 squared is 9, then you divide 90 by 9. The answer is 10.
$427.50 is the final cost the patient needs to pay
The answer is 2 angle fgh because the outside angle is larger than 180 degrees
Think of ratios as fractions.
5:8 is the same as 5/8
6:7 is the same as 6/7
Divide each fraction
5/8 = 0.625
6/7 = 0.857
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0.857 > 0.625 ∴ 6:7 is greater, and is your answer
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hope this helps
