Question 40 Answer and Explanation _ACT December 2011 Form 70A Math Section

40. Consider the 4th-degree polynomial function graphed in the standard (x, y) coordinate plane below. The function has a local maximum at b, local minimums at a and d, and x-intercepts at a, c, and e. On what interval(s) of x is the function increasing?

F. From negative infinity to positive infinity

G. From negative infinity to a and from b to d

H. From negative infinity to c and from e to positive infinity

J. From a to b and from d to positive infinity

K. From c to e

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

See when the function is ascending.