Simplify (3a4 – 2a2 + 5a – 10) – (2a4 + 4a2 + 5a – 2). a. a4 + 2a2 + 10a – 12 b. 5a4 + 4a3 + 3a2 + 10a – 12 c. a4 – 6a2 – 8 d. a4 + 4a2 + 10a – 12

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?

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

The experience c-0.25c can be used to find the cost of an item on sale for 25% off which expression beloit equivalent to c-0.25c