we have

Combine like terms

therefore
<u>the answer is the option C</u>
He combined the terms
and
incorrectly
It is not a function.
For any positive x this graph will give two different values y, and that is not allowed to happen for functions.
No one can give you an answer unless you provide a picture of the graphs
400 but it depends on what it is
Answer:
Step-by-step explanation:
This seems more like a physics questions, but i'll help you :P
the circle is 8 feet across or a radius of 4 feet
circumference of the circle is 2
r = 25.132741 feet
it's going around 420 times a minute
420 * 25.132741 = 10555.75132 feet per minute
10,555.75