2. At a store, 3 cents on every dollar spent is charged as sales tax. How much is paid as sales tax on a costume which cost $196.00

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?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}