Determine if the expression -x^4-2x^2 is a polynomial or not. If it is a polynomial, state the type and degree of the polynomial.

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?