Robbie owns 253 & Joshua owns 198
220 x 1.1 = 253
220 x 0.9 = 198
X = day # example being day 2 = x = 2
1x = how much money they have.
Ex. Day 3
x = 3
1x = 3
The slope of the line is

It can be found from any two points that fall on a line by using the formula

2 is x or y from the second point and 1 is x or y from the first point
For example in that problem the first point is -2,0 and the second one is 0,3
Answer:
Step 1: It should be m∠m + m∠n + m∠o = 180° (sum of angles in a triangle)
Step-by-step explanation:
He made the mistake in Step 1: m∠m + m∠n + m∠p = 180°
It should be m∠m + m∠n + m∠o = 180°
Then only, he can equate it with m∠o + m∠p in step 3.
So, m∠p is the exterior angle and m∠m and m∠n are the two remote interior angles.
m∠o is the adjacent angle to m∠p. They form a linear pair.
Hence, the correct answer is Step 1.