grandma must add the areas of two plots of land to determine the amount in of seedy plant in her garden. the area of plot A can be represented by 3x^2 + 7x - 5, and the plot B can be represented by 5x^2 - 4x + 11. Write a polynomial that represents the total area of both plots of land.

Which expression is equivalent to the expression shown?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning