(x+y)^2=x^2+y^2+2xy=73+2*24=73+48=121
⇒ (x+y)^2=121
Answer: 120 Packages
Step-by-step explanation:
Given
75 random packages are check
3 package is found faulty
So, the percentage of error is

i.e. 4% packages is faulty
For 3000 sample, expected faulty packages are

Add 73 + 15 + 8 then subtract it from 190 :) hope I helped
The answer would be x-8/x+3, thus option C.
The question is not clear here for me plz put the graph so I may answer