Which correctly describes the roots of the following cubic equation x^3-5x^2+3x+9=0? a. three real roots, each with a different value b. one real root and to complex roots c. three real roots, two of which are equal in value d. 2 real roots and one complex root?

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Determine domain and range, largest open interval, and intervals which function is continuous.