Plz tell me if the quadratic function is really x=-b plus or minus the square root of b squared minus 4ac all over 2a?

At which value in the domain does f(x) =0?

If u good at math hit me up on insta or sum @basic_jaiden or @ and

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?