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Basic Math/this is the correct one

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Question
i know your getting this one twice lynn but
i forgot to add the powers^ to a couple of them
-sorry


21. h(x) = 2x^3 - 5x^2
  Find h(-5)

a.) -375      b.) -75

c.) -80       d.) -175



22. f(x) = 15 - 6x
   g(x) = 3/5 x       
   Find f(g(-10))

a.) 51       b.) 14 16/25

c.) -54      d.) 15



23. f(x) = 15 - 6x
   g(x) = 3/5 x       
   Find g(f(x))

a.) 9 - 10x              b.) 9 - 18/5 x

c.) 1/25  -  1/10 x      d.) 15 -  18/5 x




24. f(x) = 15 - 6x
   g(x) = 3/5 x       
   Find g(f(5))

a.) -3       b.)  -9

c.) -41      d.) 23/50




25. f(x) = 15 - 6x
   h(x) = 3/4 x - 5
   Find f(h(6))

a.) -9     b.) 18

c.) -3     d.) 6  7/8




26. g(x) = 8x^2 - 5
   Find g(-3)

a.) 67      b.)  43

c.) -53     d.) -33



27. f(x) = -3x
   g(x) = 8x2 - 5
   Find g(f(-2))

a.) 43      b.) -53

c.) 283     d.) -293



28. h(x) = x^2 + 7x
   Find h(-11)

a.) -55       b.)  -198

c.) 44        d.)  -99




29. h(x) = x^2 + 7x
  Find h(-5)

a.) -45       b.) -25

c.) -60       d.) -10



30. f(x) = x^3 - x^2 - 3 x + 5
   Find f(4)

a.) 41      b.) 3

c.) 65      d.) 13  

Answer
21. h(x) = 2x^3 - 5x^2
 Find h(-5)

a.) -375

22. f(x) = 15 - 6x
  g(x) = 3/5 x       
  Find f(g(-10))

a.) 51   


23. f(x) = 15 - 6x
  g(x) = 3/5 x       
  Find g(f(x))

b.) 9 - 18/5 x


24. f(x) = 15 - 6x
  g(x) = 3/5 x       
  Find g(f(5))

b.)  -9


25. f(x) = 15 - 6x
  h(x) = 3/4 x - 5
  Find f(h(6))

b.) 18


26. g(x) = 8x^2 - 5
  Find g(-3)

a.) 67   


27. f(x) = -3x
  g(x) = 8x2 - 5
  Find g(f(-2))

c.) 283


28. h(x) = x^2 + 7x
  Find h(-11)

c.) 44


29. h(x) = x^2 + 7x
 Find h(-5)

d.) -10


30. f(x) = x^3 - x^2 - 3 x + 5
  Find f(4)

a.) 41


How'd I do?  I'm doing these mostly in my head, so let me know if I miss one.

Basic Math

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Lynn Houston

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I can answer questions in basic algebra and any grade school math.

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Love math, currently helping my nephew get through Intermediate Algebra.

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I majored in Math Ed in college (but decided not to teach), so have over 40 credits of math.

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