Harold is twice as old as jack, who is three years older than dan. if harold's age is five times dan's age, how old in years is jack?

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Which of the following contains a variable?