Answer:
D the majority of the data values fall in the upper quartile for both sets of data
Y = -(2/3)x+4 is the answer to the equation; solving for y
The answer is A because the sign changes
Answer:

Step-by-step explanation:
Let x be the normal time it takes for her to commute. We know that if she was 30min late, this would had 30 min to the journey. She takes a different route, she can travel four times faster than the normal route.
Therefore the normal time of commute will be 4 times less:

This equation states that the commute time will be four times faster and adding the 30min that she is late.