6. A-C
8. A-D
Thats all I know, sorry.
Answer: multifly then divide
Step-by-step explanation:
Answer: D) 14.3%
Step-by-step explanation:
Conditional probability formula:

So, The probability he or she was dissatisfied, given that he or she had hip surgery = 
From the table, the number of persons who are dissatisfied and has hip surgery = 15
Total persons have hip surgery = 105
Required probability = 
In percent, Required probability = 14.3%
Correct option D) 14.3%
We can replace the inequality with qual sign:
2x - y = 4
x + y = -1
We can combine both question
3x = 3
x = 1
Since we know x = 1, we can solve for y by plug in in either equation:
x + y = -1
1 + y =-1
y = -2
or
2x - y = 4
2(1) - y = 4
-y = 2
y = -2
So the solution of this system of equation is the coordinate (1, -2)
So it would be 12 minutes and $5 per 12 minutes.