The assistant manager of a surf shop estimates that 65% of customers will make a purchase. (10 points) Part A: How many customers should a salesperson expect until he finds a customer that makes a
purchase?
Part B: What is the probability that a salesperson helps 3 customers until he finds the first person to
make a purchase?

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)