anonymous
  • anonymous
Which of the following functions has the largest value when x = 4? e(x) = x2 + 6x + 21 m(x) = 8x v(x) = 31x A)e(x) D)v(x) C)m(x) D)All the functions are equal at x = 4.
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@misty1212
anonymous
  • anonymous
@ganeshie8
anonymous
  • anonymous
@jagr2713

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More answers

butterflydreamer
  • butterflydreamer
you just want to plug in " x = 4" for each of the functions :) Let's start with \[e(x) = x^2 + 6x + 21\] So when we replace all the x's with 4, we get this equation. \[e(4) = 4^2 + 6(4) + 21 = ?\]
anonymous
  • anonymous
WAIT
butterflydreamer
  • butterflydreamer
okey dokey
anonymous
  • anonymous
61?
butterflydreamer
  • butterflydreamer
yep :) good job! so, e(4) = 61 Now we do the same thing with the other functions :) \[m(x) = 8x \] plug in x = 4 and we get: \[m(4) = 8(4) = ?\]
anonymous
  • anonymous
32?
butterflydreamer
  • butterflydreamer
yes good! Now next function: \[v(x) = 31(x)\] plug in x = 4 \[v(4) = 31(4) = ?\]
anonymous
  • anonymous
124?
butterflydreamer
  • butterflydreamer
yeeees :D So now which of the functions had the largest value when x = 4?
anonymous
  • anonymous
its A?
butterflydreamer
  • butterflydreamer
not quite... we already worked out what EACH function equals when x = 4, e(4) = 61 m(4) = 32 v(4) = 124 So which one is has the largest value?
anonymous
  • anonymous
V(4)
butterflydreamer
  • butterflydreamer
yesss so that means v(x) would be the largest function when x = 4
anonymous
  • anonymous
SO the answer its B? RIGHT
butterflydreamer
  • butterflydreamer
yes...
anonymous
  • anonymous
Can you help with two more please?
butterflydreamer
  • butterflydreamer
i can try lol
anonymous
  • anonymous
Indicate whether the following statement is true or false: An exponential growth function never exceeds a quadratic function with a positive leading coefficient. A)TRUE B)FALSE
butterflydreamer
  • butterflydreamer
ohh xD i can't answer that question, sorry!
anonymous
  • anonymous
ONE MORE?
butterflydreamer
  • butterflydreamer
LOL close this question and post it as a new one so other people can help you answer them xD I'm not very good with this stuff hahaha.

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