#29,#31 Problems

D.Mosley 12/2/13 Mr.Kirkland Math III

"Your friend is using Descartes's Rule of Signs to find the number of negative real roots of x^3 + x^2 + x + 1 = 0. Describe and correct the error."

Because There are 3 sign changes there are 1 negative real roots.

The person that did the original problem didn't simplify the problem correctly which lead to the incorrect answer.


A gardener is designing a new garden in the shape of a trapezoid. She wants the shorter base to be twice the height and the longer base to be 4 feet longer than the shorter base. If she has enough topsoil to create a 60ft^2 garden, what dimensions should she use for the garden?

In this Problem the longbase is 18ft the short base is 14ft and the height is 7ft.