PracticePE PartBKey - 22. i i 2 1 , 2 1 , − + 23. vertex...

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PRACTICE FOR PLACEMENT EXAM PART B – ANSWER KEY 1. 2 3 3 y z x 2. 18 3. No solution 4. [] 0 , 4 5. 20 6. 3 = x 7. 2 13 2 7 = x y 8. Base is 4 feet. Height is 6 feet. 9. i i + 3 , 3 , 0 10. vertex () 4 , 3 , x intercepts ) 0 , 1 ( and ) 0 , 5 ( , y intercept ( ) 5 , 0 , opens down. 11. () x + 1 2 12. No solution 13. () ( ) , 2 2 , 3 14. a) Domain: () ( ) ( ) , 1 1 , 2 2 , b) () 1 4 = f c) () 2 4 = f and () 2 2 = f 15. a) 2 b) 4 1 c) 5 1 16. () o 40 cos 10 = x 17. 5 3 8 4 z x y 18. 23 25 19. , 2 3 2 13 , 20. 15 21. The width is 9 inches. The area is 108 square inches.
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Unformatted text preview: 22. i i 2 1 , 2 1 , − + 23. vertex ( ) 8 , 3 − − , x intercepts ) , 1 ( − and ) , 5 ( − , y intercept ( ) 10 , , opens up 24. 8 4 − − x 25. ( ) 3 , 3 − 26. a) Domain: ( ) ( ) ∞ ∪ ∞ − , 3 3 , b) Range: ( ) ∞ − , 4 c) ( ) = g and ( ) 4 = g 27. a) 2 − b) c) 4 28. 2 3 4 + or 4 4 3 4 + 29. 2 − 30. The ladder is ( ) o 72 sin 8 feet....
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This document was uploaded on 04/19/2011.

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