Answer: C
Step-by-step explanation:
Since y = 0 at x=3pi/2, we know that this is a cosine graph.
So to determine if its -cos or cosine, we can test the pt (0, 1).
Since cos(0)=1 whereas -cos(0)=-1, the answer is y=cos(x).
ANSWER

EXPLANATION
The given product is

This is always equal to

The identity

is called difference of two squares.
We can verify this by simply expanding the brackets using the distributive property to obtain,


This simplifies to
Answer:
c
Step-by-step explanation:
Answer:
y=2x+11
Step-by-step explanation:
You first have to distribute the 2 to (x+7) to get y+3=2x+14. after that all you have to do is subtract both sides of the equation by 3 to get y=2x+11
Answer:
You have not added a picture soi can not help answer this question.
Step-by-step explanation:
Add the picture by either taking a photo or screenshot of the question then upload it.