1) x 2 (x + 2)(x - 5) = 0 2) (x 2 + 9)(x 2 + 6) = 0

3) f (x) = x 3 + 2x 2 - 8x

4) f (x) = x 3 + 2x 2 - 3x

5) f (x) = x 4 + 5x 3 + 4x 2 + 20x

6) f (x) = x 4 - 8x

State the number of complex roots and the possible number of real and imaginary roots for each equation. Then find all roots.

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.