Answer:
C
Step-by-step explanation:
<em>B: 2X + 12 > 3</em>
2x > -9
x> -9/2
<em>C: 2X - 5 > 7</em>
2x > 12
x > 6
<em>D: 2x - 6 > 24</em>
2x > 30
x > 15
Hope this helps ^-^
Answer:
d.x=-8 and x=-10
Step-by-step explanation:
Answer:
See Below.
Step-by-step explanation:
We want to show that the function:

Increases for all values of <em>x</em>.
A function is increasing whenever its derivative is positive.
So, find the derivative of our function:
![\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Cfrac%7Bd%7D%7Bdx%7D%5Cleft%5Be%5Ex%20-%20e%5E%7B-x%7D%5Cright%5D)
Differentiate:

Simplify:

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of <em>x.</em>
Step-by-step explanation:
33x