Answer:
What I got is A. 13.6
Step-by-step explanation:
i did math in journal.
Answer:
B. y=3x-2
Step-by-step explanation:
Regression line has positive slope value, it's rise from left to right.
y=3x-2 seems to be the most possible one
Try this solution:dy/dx=y⁴cosx; y⁻⁴dy=cosxdx;

Always negative when dealing with expontents
B, just because the diagonals are perpendicular doesn't mean they are equal in length, you can get a Kite with perpendicular diagonals