Answer:

Step-by-step explanation:
To find the inverse function, solve for y:
x = f(y)
x = 2y +3
x -3 = 2y
(x -3)/2 = y
The inverse function is ...

Answer:
x = 6
y = 12
z = 12√2
Step-by-step explanation:
Irrational number: Any real number that cannot be written in fraction form is an irrational number.
21 / 16
= 21 ÷ 16
= 1 5/16
.......
I see nothing to explain here :/
It is a rational number because it can be expressed as a fraction in the form of <span>9/10.
I hope I helped! :D</span>