Its just for number 1 and 2 and i will give brainlist just please help me out

What is the length of bc ? enter your answer in the box.bc =

Which of these choices show a pair of equivalent expressions?

Two positive integers are 3 units apart on a number line. their product is 108. which equation can be used to solve for m, the greater integer? m(m – 3) = 108 m(m + 3) = 108 (m + 3)(m – 3) = 108 (m – 12)(m – 9) = 108