Step-by-step explanation:
The Mathematical transformation of given word problem can be given as:

132. The sum of the angles of a six sided polygon is 720° so you can find the missing one from that.
Step-by-step explanation:
3.4 and -3.4 both have the same absolute value.
It appears that these days would be Tuesday and Friday based on the data you have provided.
Absolute Value
Absolute value is based on the numbers alone, and not the sign in front of them (negative or positive)
When considering absolute value, ignore positive and negative signs. Absolute value is indicated by terms inside of | | straight vertical lines
Example:
|3.4| = 3.4
|-3.4| = 3.4
X=0
y=5/9
Solution;
2x-3y=2x=6y-5
-6y-3y=2x-2x=-5
-9y=0=-5
x=0
-9y=-5
y=5/9
B and a. it goes down about two lines and then has a very more steep incline