The given function is,
.
Or, 
To find the inverse of a function, first step is to switch x and y. Therefore,
Next stpe is to solve the above equation for y t get the inverse f f(x). Hence, multiply each sides by y + 5 to get rid of fraction form. So,
xy + 5x = 2y - 1
xy = 2y - 1 - 5x Subtract 5x from each sides to isolate y.
xy - 2y = -5x - 1 Subtract 2y from each sides.
y(x - 2) = -5x -1 Take out the common factor y.
Divide each sides by x-2.
So, 
Now when we will compare 
with 
then we will get a = -5, b = -1, c = 1 and d=-2
So, 
Hope this helps you!
Using the quadratic equation we get:
Factoring out 2 we get
Factoring out the imaginary number:
So b.
Answer: don't know sorry
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
As the number you are rounding is followed by 9, you have to round the number up.When the number you are rounding up if followed by 5,6,7,8 or 9 you will have to round the number up. Example: 38 rounded to the nearest ten is 40.
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30.
