Add all the totals up and divide by how many groups there are
Add up all the wages and divide by the number of wages so 16 sets of wages which equals 276.625
w'x is 0.
5x + 5
you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.
(f + g)x = -x^2 +3x + 5 + x^2 + 2x
(f + g)x = 5x + 5
the graph of z = 5x + 5 is shown below. always use desmos when in doubt.