91 = 7*13 is a composite number. It has factors other than itself and 1.
If is -(-13/12) then A. -13/-12
If is -13/12 then B. 13/-12

The y intercept of that rule is 0
Answer:
0.00939495805 about 0.01
Step-by-step explanation:
basically solving for arccos(8.5/9.9) in degrees, had to run through calculator