Atree casts a shadow of 28 feet. at the same time, a biologist who is 7 feet tall casts a shadow of 2 feet. how tall is the tree? 8 feet 14 feet 78 feet 98 feet

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

If square root x = -7, then x= -49 true or false

Use sigma notation to represent the following series for 9 terms.