3x2+bx+24=0, if one of its roots is 3

The number of lattes sold daily for two coffee shops is shown in the table: lattes 12 52 57 33 51 15 46 45 based on the data, what is the difference between the median of the data, including the possible outlier(s) and excluding the possible outlier(s)? 48.5 23 8.4 3

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Nine more than four times a number is the same as one less than twice the number. find the number?