Answer:
x=4
Step-by-step explanation:
combine like terms
divide to get the x by itself
Answer:
Gah! Inverses!
Step-by-step explanation:
This is a pretty simple concept, just switch the x and f(x) values!
If you don't understand, look at how I solve it!

Switching the positions of the x and f(x) values...

Note: That f(x)^-1 is the proper notation for inverse functions.

There you go!
Hope this helps, and don't procrastinate!
Answer:
16 in
Step-by-step explanation:
The 3 part of the ratio represents 24 inches.
Dividing by 3 gives the value of one part of the ratio.
24 in ÷ 3 = 8 in ← value of 1 part of the ratio, thus
2 parts = 2 × 8 in = 16 in ← hypotenuse of smaller triangle