Write an explicit function for f(x)
Can anyone help me with this please I’ll mark as brainliest

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?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?