Answer:
This is just like congreunt and similarity
To find the area of rectangle, just multiply the length x width. So a=20 x 13=260
Y = 1.5x - 2
Use format y = mx + b
m = slope, b = y intercept
Answer: slope is 1.5, y intercept is -2
1 lap equals to 3 1/5 minutes what about 6 1/2 cross multiply to get 6 1/2*3 1/5 divide by 1 you get 20 4/5 translated to time is 20 minutes and 48 seconds (4/5*60=48)
20 minutes 48seconds
Answer

Step by Step Explanation
Given
See attachment for table
Required
Determine the sinusoidal function
The sinusoidal function is represented as:
Where
And it is calculated as:
From the table:
Highest = 77 and Least = 21
So:
B is calculated as:
The period is 12 i.e. 12 months
So:
C is calculated as:





Lastly, D is calculated as:
So:
So, the function is:
