Graph the inequality.x + y < -5
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.A rescue cable attached to a helicopter weighs 2 lb/ft. A 200-lb man grabs the end of the rope and is pulled from the ocean into the helicopter. How much work is done in lifting the man if the helicopter is 30 ft above the water?
A. 6060 ft ? lb B. 6900 ft ? lb C. 7800 ft ? lb D. 1100 ft ? lb
Solve.The formula for converting Fahrenheit temperatures to Celsius temperatures is 
Use this formula to solve the problem. In a certain city, the average temperature ranges from 
to 
Celsius. Find an inequality that represents the range of Fahrenheit temperatures. If necessary, round to the nearest tenth of a degree.
A. 16.4° ? F ? 27.6° B. -18.4° ? F ? 17.6° C. -82.4° ? F ? -46.4° D. -50.4° ? F ? -14.4°
Factor, if possible; if the polynomial is not factorable, write "prime."x2 + 8x - 48
A. (x - 12)(x + 4) B. (x + 12)(x - 4) C. prime D. (x - 12)(x + 1)
An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 750 tourist class, and 1500 economy class passengers
For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost? A) 9 P1 planes and 13 P2 planes B) 20 P1 planes and 0 P2 planes C) 7 P1 planes and 11 P2 planes D) 11 P1 planes and 7 P2 planes