= 15.745001+ 1.80618
= 17.551181
I hope that's help !
Answer: 7.7 years
Step-by-step explanation:
Given
The cost of HD TV is $700 and it is decreasing at the rate of 15% per year
After one year it becomes

after 2 year it becomes

Suppose, after x years it becomes $200

Thus, it takes 7.7 years for the cost to come under $200.
I believe C/12=pi which means the answer would be B.
Answer: The answer is 35 degrees