To increase an amount by 7 percent what single multiplier would you use

Me because some of question i don’t understand

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

Answer pls man im trying to get out of summer school