-7 is the value of discriminant for this equation.
x would be 6 because you double 5 to get ten, so you double 3 to get 6
Hi there!
From what it looks like in your table of values,
when x equals -12, y is equal to -128
There you go! I really hope this helped, if there's anything just let me know! :)
The frequency table is attached.
Since there were 30 people out of the 60 that received cold medicine, that means that 60-30=30 people did not.
Since 26 people had a cold longer than 7 days, this means 60-26=34 had a cold that was less than or equal to 7 days.
14 people had a cold longer than 7 days and received medicine; this means that 26-14=12 people had a cold longer than 7 days and did not receive medicine.
30-14=16 people received medicine and had a cold less than or equal to 7 days.
30-12=18 people did not receive medicine and had a cold less than or equal to 7 days.