Answer: f^ -1 = x-9/2
Explanation & Steps:
1) Change f(x) to y
2) Switch y and x -> you will get x= y + 9/2
3) subtract 9/2 on both sides -> you will get x-9/2= y
Result- y = x-9/2
(Switch y to f^-1)
Hope this helps :)
Step-by-step explanation:

Anything subtracted by itself is 0
So, the answer is 0.
Hope this helped!
Answer:
R___S___T
RT=RS+ST
(17y-33) =( 9y+3)+(3y+4)
17y-33 = 12y+ 7
17y - 12y = 7+33
5y= 40
y=40/5
y= 8
RS = 9y+3 = 9(8)+3= 72+3=75
ST= 3y+4 = 3(8)+4=24+4=28
RT= 17y-33= 17(8)-33= 136-33= 103 —>
<u>Or</u><u> </u><u>;</u> RT=RS+ST =75+28= 103
<h3><u>So</u><u>;</u></h3><h3>a. <u>Ans;</u> y=8</h3>
<h3>b. <u>Ans;</u> RS= 75 , ST = 28 , RT = 103</h3>
I hope I helped you^_^