anonymous
  • anonymous
Medal and fan awarded :))) Given the following functions f(x) and g(x), solve (f + g)(3) and select the correct answer below: f(x) = 2x + 21 g(x) = x − 24 −27 −21 6 48
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@Mehek14
welshfella
  • welshfella
first add f(x) and g(x)
anonymous
  • anonymous
How do I add f(x) and g(x)? This is a brand new topic to me, lol

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More answers

welshfella
  • welshfella
add like terms 2x + 21 + x - 24
welshfella
  • welshfella
- simple algebra
anonymous
  • anonymous
3 x - 3
welshfella
  • welshfella
right now all you need do is plug in x = 3 and work it out
anonymous
  • anonymous
f(3) g(3)?
welshfella
  • welshfella
3(3) - 3 = ?
anonymous
  • anonymous
6
welshfella
  • welshfella
right! thats it
welshfella
  • welshfella
(f + g)(3) = 6
anonymous
  • anonymous
So how do I work that out
welshfella
  • welshfella
- you've worked it out 3(3) - 3 = 6
welshfella
  • welshfella
(f + g)(3) means the sum of f(x) and g(x) when x = 3
anonymous
  • anonymous
So the answer's 6?
welshfella
  • welshfella
yes
anonymous
  • anonymous
Great :D
welshfella
  • welshfella
yw
anonymous
  • anonymous
Could you help me with a few more?
welshfella
  • welshfella
well i've only got 5 minutes...
welshfella
  • welshfella
ok i could help with 1 more
anonymous
  • anonymous
Great :)
anonymous
  • anonymous
Dishwashers are on sale for 25% off the original price (d), which can be expressed with the function p(d) = 0.75d. Local taxes are an additional 14% of the discounted price, which can be expressed with the function c(p) = 1.14p. Using this information, which of the following represents the final price of a dishwasher with the discount and taxes applied? c(p) ⋅ p(d) = 0.855pd c(p) + p(d) = 1.89d c[p(d)] = 0.855d d[c(p)] = 1.89p
welshfella
  • welshfella
0.75d - 0.14*0.75d
anonymous
  • anonymous
0.645?
anonymous
  • anonymous
or is it .14
welshfella
  • welshfella
- sorry gotta go right now
anonymous
  • anonymous
Darn :(
welshfella
  • welshfella
I havent got this clear in my mind yet
anonymous
  • anonymous
Thanks for the help :/

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