Answer:
this may help you.look it once
C = $7s
independent variable ie the changing variable is s
dependent variable ie the non changing variable is c
To find the mean you add all the numbers then divide by how many numbers there are :
8+16+12+11+8=55
in the equation there are 5 numbers, so you divide 55 by 5 :
55÷5=11
the mean is 11
hope this helps