Answer:
(5 , 3.8)
Step-by-step explanation:
Hope this help! :)
Step-by-step explanation:





If (55 + x)/2 is to be 67, then 55+x = 2*67, so x = 2*67 - 55 = 79
Y=mx+c isn't an equation to solve. It's the slope-intercept formula for graphing lines.
y and x are the variables, and m and c are the constants.
As an example, the line y=4x+2 looks like this: