If a number is tripledand then reduced by nine, the result is sixty six what is the expression ,equation

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

How to write four times a number, minus 6,is equal to theee times the number+8 as an equqtion

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer