One study shows that 50% of all federal inmates are serving time for drug dealing. A random sample of 16 federal inmates is selected. What is the probablility that 3 or fewer are serving time for drug dealing?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups