9x^2-8x-16how do i factor this polynomial expression

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?

Roderick wants to draw a circle for which the numerical value of the circumference is greater than the value of the area.which lengths could he use for the radius? check all that apply