I am so confused. please help​

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Find the 6th term of the expansion of (2p - 3q)11. a. -7,185,024p4q7 c. -7,185p4q7 b. -7,185,024p6q5 d. -7,185p6q5 select the best answer from the choices provided a b c d