What number complete the square x^2 +\- bx

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test