Solve.An airplane travels 400 miles against the wind in 4 hours, and makes the return trip with the same wind in 2 hours. Find the speed of the wind.
A. 200 mph
B. 100 mph
C. 50 mph
D. 150 mph
Answer: C
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Solve the problem.
In a school survey, students showed these preferences for instructional materials.About how many students would you expect to prefer computers in a school of 800 students?
A. About 160 students B. About 144 students C. About 288 students D. About 36 students
Solve the problem.An animal species is introduced into a certain area. Its population is approximated by 
, where t represents the number of months since its introduction. Find the population of this species 6 months after its introduction into the area. Round answer to the nearest whole number.
A. 704 animals B. 240 animals C. 470 animals D. 74 animals
Describe the similarities and differences between the cost-leadership strategy and the focused cost-leadership strategy; and between the differentiation strategy and the focused differentiation strategy.
What will be an ideal response?
Find the indicated sum.
A. 
B. 
C. 
D. 