Answer:
x=2 ,. y=y -3
Step-by-step explanation:
I hope it helps
Answer:
B: Yes, it is biased. Some of the residents who are surveyed may not want to respond to someone who knocks at their door.
Step-by-step explanation: Just took a quiz and past. Edge2020
Correct Option:Option B
Solution:The given expression is:

cos(3x) can be written as cos(2x +x). Expanding it, we get:

Using this value of cos(3x) in given equation, we get:
Answer:
x²+y²=225
Step-by-step explanation:
when centered at the origin the equation of a circle is x²+y²=r²
we are given x and y so 9²+12²=r²
