Let's denote Cindy's age which is unknown with X
We know that Cindy's age is 3 times her age 6 years ago.
6 years ago Cindy's age was the present age (X) - 6 : X-6
The fact that the present age is 3 times her age 6 year ago can be written as:
3*(X-6)
So, finally:
X=3*(X-6)
The answer is definitely B
Well the square root of 72 is 8.485 and the square root of 45 is 6.708. hope this helps :)
Least square regressions are used to find the equation of <em>best fit between two variables</em>.
The equation of the least-squares regression line is: 
The given parameters are:





The equation of the least-squares regression line is represented as:

Where:


So, we have:






So, the equation is:


Read more about equations of least squares regression at:
brainly.com/question/2141008
Mean- 58.75
median- 63
mode-63
range-70