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Due to your renown as a Mathematician, Gandalf has hired you as a part-time member of the Fellowship of the Ring, who have been tasked with destroying the One Ring. Gandalf knows that Sauron's power can be modeled with the equation P(x) = -x2 - 50x + 10,000 where x is the distance (in miles) between the One Ring and Mt. Doom. The Fellowship is traveling towards Mt. Doom at a rate of 30 miles per day (that is, the rate of change of distance is -30 miles per day). Find out the (time) rate of increase in Sauron's power when the Fellowship is 75 miles from Mt. Doom.
For one particular grade of gravel, the ratio of the height of the cone to its radius is 3:2. The conveyor delivers 20 cubic feet per minute to the pile. How fast is the height of the pile increasing when its radius is 10 feet?
Can soft drinks cost $0.30 in a. Certain vending machine. What is the expected value and variance of daily vevenue (y) from the machine if x, the number of cans sold per day, has e(x) =125, and var(x)=50
Jack babysat 2 hours each night for 10 nights.she earned a total $180 babysitting.Jack wants to calculate her hourly rate.How much did jack earn per hour babysitting?
the formula r=2 radical 5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length l, in feet. how far will a car skid at 30 mph.
Based on exponential growth function how long will it take the world population to reach exactly 7 billion? How about 10 billion? Based on the population how long before it will reach 400 million? and 500 million?
A beam 4 inches wide, 6 inches deep, and 25 feet long can support a safe load of 576 pounds. Find the safe load for a beam that is of the same material but is 6 inches wide, 10 inches deep, and 20 feet long.
Swearingen and McDonald, a small furniture manufacturer, produces fine hardwood tables and chairs. Each product must go through three stages in the manufacturing process -assembly, finishing, and inspection
Examine the mapping of open [respectively, closed] intervals under the functions g(x) := 1/(x^2 + 1) and h(x) := x^3 for x in R
Find the quadratic polynomial of best fit and graph it on the scatterplot. State the formula for the quadratic polynomial.
A student inherits 17500 dollars and puts the money in two different accounts. One account earns 5% annually and one account earns 8% annually. She earned a total of 1075 dollars after one year. How much money is in each account?
To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.
Betty Malloy, owner of the Eagle Tavern in Pittsburgh, is preparing for Super Bowl Sunday, and she must determine how much beer to stock. Betty stocks three brands of beer - Yodel, Shotz, and Rainwater. Formulate a linear programming model for this..
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