Answer: B
Step-by-step explanation:
To solve this problem, we first need to find the inverse of f(x). Then, you would plug in x=8. To find teh inverse, you switch y with x and x with y, then solve for y.
y=2x+5 [switch y with x and x with y]
x=2y+5 [subtract both sides by 5]
x-5=2y [divide both sides by 2]
y=(x-5)/2
Now that we have the inverse function, we plug in x=8 and solve.
y=(8-5)/2 [subtract]
y=3/2
Now, we know that f⁻¹(8)=3/2.
Answer:
x^3 - 5x^2 + 2x + 8
= (x^3 - 4x^2) - (x^2 - 4x) - (2x - 8)
= x^2(x - 4) - x(x - 4) - 2(x - 4)
= (x^2 - x - 2)(x - 4)
= [x(x - 2) + (x - 2)](x - 4)
= (x - 2)(x + 1)(x - 4)
Hope this helps!
:)
Have a look at this, included a couple steps and two ways to write the answer
If you multiply 3 and 3 and 3
Since 6/1.5 is 4. It increased 400%.