Answer:
f^-1(x) = 3 - 5x, second option
Step-by-step explanation:
To determine the inverse simply interchange the variables and solve for y;
f(x) = 3 - x / 5 -> Interchange the variables
x = 3 - y/5 -> Multiply either side by 5
5x = 3 - y -> Subtract three from either side
- y = 5x - 3 -> Divide either side by - 1
y = - 5x + 3
Your solution is f^-1(x) = 3 - 5x
Remember that X will always be one up or down depending on if there is a - or not (if it is just an x) and one over! Hope this helps
Answer:

Step-by-step explanation:
FH is the combined lengths of FG and GH.
In an equation, this is:

We already know that FG is 8 and that GH is 14. Thus:

Add:

So, the length of FH is 22.
And we're done!
Answer:
20%
a) a train goes 60 mph for 180 miles
50 miles
Step-by-step explanation:
6/30=.20 = 20%
180 miles divided by 60 mph=3 hours
80%x = 40 miles
.8x=40
.8x/.8=40/.8
x=50 miles