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Question 735278: State the domain and range:
7. y = x2 + 86
8. y = 2x3 + 8
9. y = -9x + 11
10. y = 40 - 8x2
11. f(x) = 11x - 5x2 + 4
find f(-4)
12. f(x) = 7 - 5x + 7x2
find f(-9)
13. f(x) = -13x2 - 7x4 - 11x
find f(5)
14. f(x) = 15x - 12
g(x) = -15x2 + 14x - 10
find g(g(7))
15. f(x) = -13x2 + 12x + 14 g(x) = 11x - 13
find f(g(7))
16. f(x) = 11x + 15
g(x) = -11x3 - 15x2 + 13x - 13
find g(f(6))
17. f(x) = 15x3 + 13x2 - 15x + 15
g(x) = 15x + 11
find g(f(9))
18. f(x) = -13x2 - 13x + 14
g(x) = -13x - 11
find g(g(3))
19. f(x) = 15x + 12
g(x) = -10x + 15
find f(g(8))
Answer by lynnlo(4176)   (Show Source):
You can put this solution on YOUR website! (7)domain=all real numbers
range=y>86,[86,∞)
(8)domain=all real numbers
range=all real numbers
(9)domain=all real numbers
range=all real numbers
(10)domain=all real numbers
range=y≤40,(-∞,40]
(11)f(x)=11x-5x2+4 find (-4)
f(-4)=11*(-4)-5(-4)(-4)(-4)+4
-44-80+4
=120
OK,YOU HAVE===========19===PROBLEMS AND I HAVE DONE 11 FOR YOU
NUMBER 11======I DID THIS ONE FOR YOU ,SO YOU SHOULD BE ABLE TO COMPLETE
THE REMAINING PROBLEMS,
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