A fast food restaurant has one drive through window. An average of 40 customer per-hour arrive at the window. It takes an average of 1 minute to serve a customer. Assume that inter-arrival and service times are exponential.

a On the average, how many customers are waiting in line?

b On the average, how long does a customer spend at the restaurant (from time of arrival to time service is completed)?

c What fraction of the time are more than 3 cars waiting for service (this includes the car (if any) at the window)?

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Consider the following function. which of the following graphs corresponds to the given function? w. x. y. z. a. z b. y c. x d.