How to do antilog on calculator.

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

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Write the equations in logarithmic form 9^4=6,561