For traffic that flows on a highway, the headway is the average time between vehicles. on four-lane highways, the probability p (as a decimal) that the headway is at least t seconds when there are 500 vehicles per hour traveling one way is given by p = 0.87t. under these circumstances, what is the probability that the headway is at least 15 seconds?

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?

Which of the following tables represents exponential functions?

Which ordered pair is a solution of the equation? 2x+3y=10