The pear company sells pphones. The cost to manufacture x pPhones is C(x)= -21x^2+52000x+21087 dollars (this includes overhead costs and production costs for each pphones). If the company sells x pphones for the maximum price they can fetch, the revenue function will be R(x)= -27x2+19600x dollars. How many pphones should the pear company produce and sell to maximize profit?

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?