D. Because the 3 is the rate and the 6 is what was already there.
Answer:

Step-by-step explanation:
x2+5x+
4/x+4
It’s C
You would use cos for this equation
Cos(45)= x/5
5 x cos(45
And when you put that in the calculator you will get that answer C
Answer:
11/200
Step-by-step explanation:
The slope of line m is also 2/7 because they are parallel so they have the same slope