Answer:
29: A
30: $7.50
31: number of dots in total:
1) 0 dots
2) 1 dot
3) 1 dot
4) 3 dots
5) 1 dot
6) 1 dot
7) 1 dot
8) 0 dots
Step-by-step explanation:
First, take all the sides you already have, then add them up. (You should get 12) To find the other two sides, do some more simple addition. The 2+3+2 of the the top side add up to six (the bottom side) and sides equal each other so add another three. Total is 12+6+3=21
We can see that

The given points are on same line.
Further explanation:
There are two methods to find if the given points are on same line
- The slope method: If the points are on same line the slopes of two pairs of points will be same
- Area of triangle method
Given points are:
A(1,3) B(4,2) C(-2,4)
We will find the slope of AB, BC, and AC
So,




We can see that

The given points are on same line.
Keywords: Slope, Co linear points
Learn more about slope at:
#LearnwithBrainly
Answer:
n is subtracted from 8 is equal to eight