Home › Forums › Math › If f(x) = 8 – 10x and g(x) = 5x + 4, what is the value of (fg)(–2)?

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  • July 21, 2021 at 9:48 pm #10839
    mansim
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      1) –196
      2) –168
      3) 22
      4) 78

      July 21, 2021 at 9:54 pm #10841
      suseelk
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        Answer : Option 2) -168

        Explanation :
        => (fg)(−2) = f(−2)×g(−2).
        => f(−2) = 8−10(−2) = 8+20 = 28
        => g(−2) = 5(−2)+4 = −10+4 = −6

        Then, (fg)(−2) = 28×−6 = −168

        • This reply was modified 2 years, 11 months ago by ProtonsTalk.
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