The answer to this is Y = 1
All that you are doing is trying to fiigure out the Frequency of all the tally marks!!
The correct name for the line shown is the answer choice C.
It can be A because the picture is a line not a ray and it cant be B because the picture shown is not a segment
Hope this helps :)
R(x) = 60x - 0.2x^2
The revenue is maximum when the derivative of R(x) = 0.
dR(x)/dx = 60 - 0.4x = 0
0.4x = 60
x = 60/0.4 = 150
Therefore, maximum revenue is 60(150) - 0.2(150)^2 = 9000 - 4500 = $4,500
Maximum revenue is $4,500 and the number of units is 150 units