Which of the following on number 25 has no like terms

The amount of energy it takes to lift a box might be a function of which of the following

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?

What is coefficient of the term of degree of degree 5 in the polynomial below