What is 8426 divided by 82 rounded to the nearest hundredth

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

Use the graph of the sine function y=2sinθ shown below

Nine more than four times a number is the same as one less than twice the number. find the number?