Suppose you have a cache of radium, which has a half-life of approximately 1590 years. How long would you have to wait for 1/3 of it to disappear?.

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)

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.

Which statement is true about the discontinuities of the function f(x) = x-5/ 3x^2-17x-28