You own a beauty salon where you not only cut hair but you also sell hair products. you buy a dozen barrettes for $18.00 and then sell them in your store for $2.00. you want to calculate your percent mark up.
to do so, you multiply 2 by 12, subtract 18 and then divide by 12. is this correct?

On her way to work, mrs. larsen gets a green light at a certain traffic light only 30% of the time. she wants to find the probability that she will get a green light at this traffic light all five mornings that she travels to work next week. use the following randomly generated list of 200 five-digit numbers to answer the questions and find the probability. select the digits you will use to represent a favorable outcome. how many favorable outcomes are on this list? what are they? given this simulation, what is the probability that mrs. larsen will get a green light at this traffic light all five mornings next week?