Recall marginal cost is the derivative of total cost, and fixed cost is the cost of producing zero units.
suppose the marginal cost for the acme corporation for producing wylie rocket fuel is given by the equation:
mc(q) = 200 * (q + 9)^-.5,
where q is quantity produced in gallons, and marginal cost is in simoleons ($) per gallon. also suppose acme has fixed costs of $4000.
1. find the total cost of producing 91 units of acme rocket fuel.

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

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