Let the model for the change in water vapor be
y = x^3 − 8x^2 + 15x
to find the x intercepts we can factor this expression
x^3 − 8x^2 + 15x = x(x−3)(x−5)
the x intercepts are 0, 3, 5
Hope this helps!
Answer: OPTION B
Step-by-step explanation:
You can observe that the exercise provides you two Linear functions.
The first Linear function is the function f(x). This is:

And the other Linear function is the function g(x):

In order to find
, you need to follow these steps shown below:
<u>Step 1</u>:
You must substitute the function f(x) into the function g(x); this means that the function f(x) will be in the place of the variable "x" of the function g(x); as you can observe below:

<u>Step 2</u>:
Finally you must combine the like terms (You can notice that the like terms are 1 and 14; then you must add them). Therefore, you get that
is:

Answer:
No, the solution of the system is (-1,5)