I believe the answer is acute. Hope this helps!!
Isolate the variable by dividing each side by factors that don't contain the variable I believe the correct answer is 1. c=ab-da
Answer:

Step-by-step explanation:
Lines form 180 degrees on either side. The negative sign simply implies direction (clockwise instead of counter-clockwise), which is negligible as 180 is exactly half of 360 so you'd form the same line.
10% is the correct answer to this question
Answer:
$20.05 is Cassie's change
Step-by-step explanation:
60.00-29.95=30.05
30.05-10=20.05