I. about 70 m; ii. 8 s; iii. because the line is straight and and going up at a constant rate; I hope I helped with the first three questions:)
Answer:
there is no question to be answered.
Step-by-step explanation:
The answer is D that is (18+41)+12 = 18+(41+12)
because A,B,C can be only be associative when
(A+B)+C= A+(B+C)
So by comparing the associative law with the options above , you will be able to get your answer
