anonymous
  • anonymous
HELP! http://prntscr.com/8ftwgn http://prntscr.com/8ftyyr http://prntscr.com/8ftz2a http://prntscr.com/8ftz6d
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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butterflydreamer
  • butterflydreamer
For your first question, they've already given you the value of f(x) and g(x) so all you want to do is plug it into the equation. :) \[f(x) = 9x + 4 \] \[ g(x) = -5x + 1\] Therefore g(x) - f(x) would equal: \[-5x + 1 - ( 9x + 4) = ? \]
anonymous
  • anonymous
=-14x-3
butterflydreamer
  • butterflydreamer
correct :)

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anonymous
  • anonymous
:]
butterflydreamer
  • butterflydreamer
For the next question: f (x) = 9x - 5 f (2) = 9(2) - 5 = ? Then after you find out what f(2) equals to, we want to find what g(4) equals to. So, g (x) = 6x g (4) = 6(4) = ? Then f(2) - g(4) = ?
anonymous
  • anonymous
they are easy just try to simply solve it
anonymous
  • anonymous
11?
butterflydreamer
  • butterflydreamer
not quiteeee. So what did you get for f(2) = ?
butterflydreamer
  • butterflydreamer
Note: f(2) = 9(2) - 5 = 18 - 5 = 13 g(4) = 6(4) = 24 f(2) - g(4) = 13 - 24 = ?
anonymous
  • anonymous
oh ok so it would be -11
butterflydreamer
  • butterflydreamer
yyyep :)
butterflydreamer
  • butterflydreamer
For question 3. You need to multiply both f(x) and g(x) together. Since \[f(x) = x^2 + 6x\] and \[g(x) = 2x^3\] Multiply both together and we get: \[f(x) \times g(x) = 2x^3 (x^2 + 6x) = ?\]
anonymous
  • anonymous
multiply the numbers and the powers will add
anonymous
  • anonymous
would is be D?
butterflydreamer
  • butterflydreamer
yyessss ^_^
butterflydreamer
  • butterflydreamer
now for the final one. Just multiply both and see which one is correct. So what do you get when you multiply f(x) and g(x) together? \[f(x) \times g(x) = 5x ( 3x - 2) = ?\]
anonymous
  • anonymous
would the answer be A?
anonymous
  • anonymous
B***
anonymous
  • anonymous
not A
butterflydreamer
  • butterflydreamer
yes A is correct but have you checked option C or D? Remember that the question says "check all correct answer(s)" :)
anonymous
  • anonymous
so A, C and D are the correct answers
anonymous
  • anonymous
B*
anonymous
  • anonymous
-.-
butterflydreamer
  • butterflydreamer
A is correct. C is correct. But what about D?? Note: when you multiply anything by 0, the answer will be 0
anonymous
  • anonymous
so D is incorrect
butterflydreamer
  • butterflydreamer
yepp :)
anonymous
  • anonymous
ty
butterflydreamer
  • butterflydreamer
no problemo~

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