Which of the following best represents the average rate at which infants grow in height during the first four years after birth?

a: 3inches per month
b: 3inches per year
c: 3 feet per month
d: 3 feet per year

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 the measure of the smallest angle in the diagram? 15 29 32 45

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items