Answer:
1 is A
2 is A
3 is none of the above
Step-by-step explanation:
Answer:
X = 4
Step-by-step explanation:
x2 + 1 = 9
We have to cross 1 over to the other side so that x becomes a value on its own. Because we are it over, the addition sign changes to subtraction which makes the expression,
x2 = 9- 1
x2 = 8
For x to stand alone we have to divide both sides by 2
x 2/2 = x
and 8/2 = 4
Therefore x=4 (Answer)
Interchange (switch) the value of x and y in "y = x + 5" as x = y + 5, subtract 5 from both sides and re-write in the form "y = f(x)" as y = x - 5.
<h3>What is an inverse function?</h3>
In Mathematics, an inverse function can be defined as a type of function that is obtained by reversing (undoing) the operation of a given function (f(x)).
The steps required to write the inverse of f(x) = x + 5 include the following:
- Interchange (switch) the value of x and y in "y = x + 5" as x = y + 5.
- Subtract 5 from both sides, we have x - 5 = y.
- Re-write in the form "y = f(x)" as y = x - 5.
Read more on inverse function here: brainly.com/question/10219387
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