Plz i am timed .which table represents the statement “a freight train is traveling at an average rate of 45 miles per hour”?

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

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?