M(CE) = 78 + 78*4/26 = 90
Factor
x(2x-1)=0
x = 1/2, 0
A histogram would best represent the data.
Dot plot is a good way to show a certain trend. However, when it comes to the number of a item, in this case the number of students in a certain score range, a histogram will be the most intuitive and concise. Thus, a histogram best represent the data presented here.
X=25 and y=-2 so then y=-40 and x=? you will have to divide and and multiple and the answer will be x=500
x3 - 6x2 - 8x - 3
—————————————————
x - 1