Solve the problem.A jet plane traveling at a constant speed goes 1200 miles with the wind, then turns around and travels for 1000 miles against the wind. If the speed of the wind is 50 mph and the total flight took 4 hours, find the speed of the plane.
A. 550 mph
B. 525 mph
C. 605 mph
D. 435 mph
Answer: A
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Suppose that one leg of a right triangle is 1 foot shorter than the other leg. The hypotenuse is 1 foot longer than the longer leg. Find the lengths of all three sides of the right triangle.
A. 1 feet, 5 feet, 6 feet B. 3 feet, 4 feet, 5 feet C. 5 feet, 6 feet, 7 feet D. 4 feet, 5 feet, 6 feet E. 1 feet, 6 feet, 6 feet
Solve the problem. A reasonable quadratic model for the population of a certain city is found to be 
where P(t) is the population (in thousands) of the city in the year that is t years since 2012. A reasonable quadratic model for the consumption of bottled water in the city is 
, where B(t) is the total amount of bottled water (in thousands of gallons) consumed by the residents of the city in the year that is t years since 2012. Let M(t) be the annual mean consumption of bottled water per person in the year that is t years since 2012. If M(t) is obtained by
finding the ratio 
, what are the units of M?
A. people per gallon
B. gallons per thousand people
C. gallons per person
D. thousands of gallons per person
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.The numbers listed below represent the amount of precipitation (in inches) last year in six different U.S. cities. 19.9?18.8?35.4?33.4?11.0?11.3Compute the standard deviation s.
A. 2808.0 in. B. 3366.9 in. C. 34.4 in. D. 10.57 in.
Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 