Answer:
your teacher is crazy about she think you are smart
Answer:
Step-by-step explanation:
intersection = { } no common elements.
union = { b,d,f,a,c,k}
the slope goes by several names
• average rate of change
• rate of change
• deltaY over deltaX
• Δy over Δx
• rise over run
• gradient
• constant of proportionality
however, is the same cat wearing different costumes.
and to get it, we simply need two points off of the straight line, hmm let's use the ones in the picture below.

Simplest way to do this:
number of books= 120
percentage represented by 120= 100%
increase current percent by 55%= 155%
: . 55% increase = original number of books * (155%)
= 120 * (155/100)
= 186
Answer:
https://www.mathsisfun.com/adding-decimals.html
This has an explanation.