What type of number can be written as a fraction p/q, where p and q are integers and q is not equal to zero

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

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?