F(x)=(7x-2)(5x-8)(x+5)(x-6) has zeros at x=-5, x=2/7, x=8/5, and x=6. What is the sign of f on the interval -5
Choose 1
(A) f is always positive on the interval.
(B) f is always negative on the interval.
(C) f is sometimes positive and sometimes negative on the interval.

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.