Find the nonpermissible replacement for a in this expression. a square over -2a +6

sum= when you add is how much the whole amount is

distance= when you use angles and it means how far it goes

step-by-step explanation:

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i