Answer:B
y=13cos(1/13x)+13
Step-by-step explanation:
Answer: Second Option

Step-by-step explanation:
The formula for calculating the average rate of change between two values of x (
and
) is:

and
are the values of the function when
and 
In this case

Observe that when
,
and when
, 
Finally the average rate of change from 3 to 6 storms is:


Answer:the percentage decrease is 36.67%
Step-by-step explanation:
Initial amount of sugar in his diet is 15 spoons in a day. Currently, the amount of sugar in his diet is 9 1/2 spoons in a day. Converting to decimal, it becomes 9.5 spoon in a day. The amount by which he reduced his sugar intake is 15 - 9.5 = 5.5 spoons.
Percentage decrease would be expressed as
Amount by which the intake decreased/ initial intake × 100
It becomes
5.5/15 × 100 = 36.67%