Use Descartes' Rule of Signs to Determine the Possible Number

question 16

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive and negative zeros of .

• A) no positive reals; no negative reals
• B) 1 positive real; 3 negative reals or 1 negative real
• C) 0 positive real; 3 negative reals or 1 negative real
• D) 3 positive reals or 1 positive real; no negative reals
• E) 3 positive reals or 1 positive real; 3 negative reals or 1 negative real

---

Definitions:

Experimental Lakes Area

A freshwater research facility in Canada, focusing on the impact of human activity and environmental changes on freshwater ecosystems.

Nitrogen Problem

Environmental and health issues arising from the excess of nitrogen compounds in ecosystems, often due to agricultural runoff and fossil fuel combustion.

Greenhouse Gases

Gases in the Earth's atmosphere that trap heat, contributing to the greenhouse effect and global warming.