Answer:
y¹⁵-20y¹⁴
Step-by-step explanation:
I'm going to assume that your problem looks like this


which means we have

Answer: your answer should be 0.51
Some people are saying it's 0.04 but that is the wrong answer.
Answer:
D
Step-by-step explanation:
The open circle at the origin means the rightmost piece will have domain x > 0. That is only the case in choices C and D.
The middle piece has a negative slope. That is only the case in choice D.
The appropriate piecewise function is ...

Answer:
90°
Step-by-step explanation:
This is only if it's a regular rectangle or a regular square, this doesn't work for something like a trapezium