Answer:
Step-by-step explanation:
Comment if you need clarification!
Answer:
Area of circle is 
Step-by-step explanation:
Formula for circumference of circle is given as,
Given that C = 15 n cm,
Substituting the value,
Solving above equation for r, divide both side by 
Simplifying,
Formula for area of circle is given as,
Substituting the value of r,
Squaring the parenthesis,
Cancelling out the common term,
Therefore, area of circle in terms of n is 
<h3>
Answer: D) The data repeats every 4 minutes</h3>
Explanation:
The period of a function measures how long a cycle takes. Think of tides on a beach. There's a regular pattern that can be predicted whether its high tide or low tide. Time is often the critical component with the period. Since choice D mentions time and the key term "repeat", this is why it's the answer.
The other values, while useful elsewhere, aren't going to tell us anything about the period. The initial value being 5 doesn't tell us when y = 5 shows up again, and if the function is repeating itself at this point or not. So info about choice A is not sufficient to determine the period. The same goes for choices B and C as well.
