Answer:

Step-by-step explanation:
In order to find the length of the missing side here, we must note that these triangles are similar.
Therefore their lengths are proportionate to each other.
So,

We can solve for x by cross multiplying.

Hope this helped!
I wanna say (C) would be your best bet correct me if I’m wrong
Answer:
Step-by-step explanation:
no ,x*x*x*x*x=x^5
x+x+x+x+x=5x
in multiplication those who have same base we add their power.
in addition those variables which have same base(or are like term) we add them.
The successful completion of the exam review packet
Answer:
f(3) = - 18
Step-by-step explanation:
To evaluate f(3) , substitute x = 3 into f(x) , that is
f(3) = - 4(3 + 1) - 2 = - 4(4) - 2 = - 16 - 2 = - 18