Please help problems below!!

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

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Bring the fraction a/a-4 to a denominator of 16-a^2