1) 3+2+15=20
2) 3/4= 27/36 1/9=4/36
3) 27/36+4/36=31/36
4) 26/27=936/972 31/36= 637/972
5) 936/972 + 637/972= 1573/972= 1 601/972
Answer: 
Step-by-step explanation:
Given
We can write it as
Express x in terms of y
Replace y be x to get the inverse
To prove, it is inverse of f(x). 
So, they are inverse of each other.
For one set the two equations equal to eachother and solve from there. 2 is 45
For three set the two equations equal. Same for four
Answer:
42
Step-by-step explanation:
Answer:
check below
Step-by-step explanation:
1. c = 68-27 = 41
2. t = 7.9+1.5 =9.4
3. a = 21*3 = 63
4. (multiply whole equation by 8) 8r+6=7, r=1/8
5. x = 25.2/4.2 = 6
6. b = 75/15 = 5
7. A. 6C = 99
B. C = 99/6 = $16.50
The solution represents the cost of one ticket.
