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Applications of quadratic equations: Maxima and minima
Between 1989 and 1997 the percentage of households with incomes of $100,000 or more (in 1997 dollars) is modeled by f(x) = .071x2 - .426x + 8.05, where x = 0 represents the year 1989. (Source; American Demographics, January 1999). Based on this model when did the percent of people in this income level reach its minimum? You do not have to graph the function.
A nursery school teacher has collected a picture from each of the 15 children in the class. She wants to hang the pictures in five rows of three. How many different arrangements are possible?
Calculate the total number of repayments Jonathon has to make to his brother and calculate the total amount Jonathon has to repay to his brother.
They report that 80% of huge successes received favorable reviews, 70% of moderate successes received favorable reviews, 40% of the breakeven texts received favorable review and 20% of the loser texts received favorable reviews. Revise the initial..
On a map 1 inch represents 58 miles. The distance between two cities on the same map is 5.85 inches. How many miles apart are the two cities?
angular speed and linear speed.a bicycle wheel with a 26 inch radius is spinning at a rate of 4 revolutions per second.
Calculate Clayton's profit margin and debt ratio.
A weight-loss program guarantees, "You'll lose weight within two weeks or we'll refund your money plus $10!" Using α = 5%, perform the sign test of the median paired difference to determine whether the median weight of these twelve participants decre..
Problem on correlation coefficient
What is the expected value of the sweepstakes for any individual? (Round to the nearest cent)
If 1300 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box.
The sum of the heights of all the students in a class is 1,472 in. The median height is 5ft 2in. How many students are 5ft 2in or taller? How many are shorter?
Let V be the volume of a sphere of radius r that is changing w/ respect to time. If dr/dt is constant, is dV/dt constant, explain. All edges of a cube are expanding at a rate of 3 centimeters per second. How fast is the volume changing when each ..
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