Class limits are the smallest and the largest data value that can go into a class.
Class marks are the midpoints of the classes. They are obtained by averaging the limits.
Cutpoints are<span> specified values used to sort continuous variables into discrete categories.
</span><span>Class Midpoint is the middle value of each data class.
For qualitative data, </span>c<span>utpoints and midpoints make sense, but class limits and marks do not, since qualitative data cannot be grouped using Limit grouping.
option D.
</span>
I assume the question asks to expand the expression to individual terms.
There are different ways to approach this, all based on FOIL or similar methods.
I prefer to split it into two parts, as follows:
(x+y+2)(y+1)
=x(y+1)+(y+2)(y+1)
=xy+x+y^2+3y+2
<u><em>y=1</em></u> this is because in rise/run the point rises 2 and moves to the right 1 and following this backwards leads to y=1
Answer:
5 (for c only)
Step-by-step explanation:
for c:
1st cleaning company: 
2nd cleaning company: 
set up as a system of equations. for them to cancle out make the y of one equation negative. I'll be making the second one negative ( it doesn't matter though)
it will look like:
make the two equations on top of eachother and line the terms up. Then combine them. The variable "y" will cancle out and you'll be left with
then you will add 3x to both sides to get 
then divide both sides by 3 to get 
if you plug in 5 for x into both of the original equations you will see that they will both make $100 in five hours. So you answer is 5
