The inverse function of the given function is 
<h3>What is the inverse of a function?</h3>
A function g is the inverse of a function f, if and only if the values of y= f(x), x = g(y).
From the formula given:

Let's substitute x with y;


Solve for y;

Learn more about solving inverse functions here:
brainly.com/question/3831584
#SPJ1
Isolate the variable using algebraic manipulation.





Hope this helps.
頑張って!
Final Result :
-2 • (4x + 3)
Processing ends successfully
Answer:
Michael is 21 years old while Jean is 7 years old.
Step-by-step explanation:
Given that Micheal is three times as old as Jean, but in seven years he will be twice old as she will be, to determine how old are they both at this time, the following calculation must be performed:
M = 3J
M + 7 = 2J + 7
7 = 1/3
7 x 3 = 21
21 + 7 = 28
7 + 7 = 14
21 / 7 = 3
28 / 14 = 2
Therefore, Michael is 21 years old while Jean is 7 years old.