Question

The math score of Celine:80,90,85,__ If the average score is 82.5,what is the __Score?

Answer 1

the observations are 80,90,85,x

means is 82.5

mean=80+90+85+x/4

=255+x/4=82.5

=225+x=82.5×4

225+x=330

x=330-255x=75

hope it helps mark it as brainliest...