Chapter 4 test
  • 1. Answer to problem 1
A) 10m
B) m21
C) 14m
D) m10
E) m4
  • 2. Answer to problem 2
A) 10y10
B) 16y10
C) 16y24
D) 160y
E) 10y24
  • 3. Answer to problem 3
A) 1
B) 0
C) 5
D) n
E) 5n
  • 4. Answer to problem 4
A) 81x6y7
B) 12x6y7
C) 81x8y12
D) 12x8y12
E) 7x16y7
  • 5. Answer to problem 5
A) x-12
B) 1/x8
C) x8
D) 8x
E) x12
  • 6. Answer to problem 6
A) 9/x6
B) x5/7
C) 14/x12
D) None of these
E) 6/x3
  • 7. Answer to problem 7
A) 2/4x
B) None of these
C) 5/x9
D) 2/x4
E) 6/x3
  • 8. Answer to problem 8
A) (25m)3/4
B) 5m3/4
C) None of these
D) (5m)4/3
E) 25m4/3
  • 9. Answer to problem 9
A) x=4.2
B) x=26.9
C) x=12.1
D) None of these
E) x=3.8
  • 10. Answer to problem 10
A) None of these
B) n=16
C) n=27
D) n=20
E) n=55
  • 11. Answer to problem 11
A) x=.23
B) x=.12
C) None of these
D) x=.54
E) x=0.45
  • 12. Answer to problem 12
A) x=2.16
B) x=6.12
C) x=5.11
D) x=3.33
E) None of these
  • 13. Answer to problem 13
A) x=1.95
B) None of these
C) x=2.45
D) x=2.08
E) x=4.41
  • 14. Answer to problem 14
A) x=3.96
B) x=-3.65
C) x=14.51
D) None of these
E) x=-2.99
  • 15. Answer to problem 15
A) Decay, because b<1
B) Decay, because b>1
C) Decay, because b>1
D) Growth, because b<1
  • 16. Answer to problem 16
A) part 1: y=16.825, part 2: y=1.05
B) None of these
C) part 1: y=16.82, part 2: y=2.6305
D) part 1: y=49.029, part 2: y=2.630
E) part 1:y=49.029, part 2: y=3.883
  • 17. Answer to problem 17
A) x=6.2 years
B) x=9.8 years
C) x=4.7 years
D) None of these
E) x=2.8 years
  • 18. Answer to problem 18
A) $65,980.44
B) $60,220.20
C) None of these
D) $78.953.38
E) $58,372.25
  • 19. Answer to problem 19
A) 16.4 inches
B) 13.8 inches
C) 15.9 inches
D) 12.9 inches
E) None of these
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