An airplane traveling with the wind flies 450 miles in 2 hours. On the return trip, the plane takes 3 hours to travel the same distance. Find the speed of the airplane if the wind is still. (Hint: d space equals space r t)

The wind is traveling 675 miles in 3 hours bc u times 450×3 which is 1350 and divide that by 2

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

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7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above