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Algebra

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2. Find the value of x^3 +2x^2 -3 when x =3
Answer-42

12. What type of correlation would you expect between the number of minutes a candle burns and the height of the candle?
a. no correlation
b. positive correlation
c. negative correlation
d. equal correlation
Answer-c

13. Write a function rule for the table shox
x 2 3 4
F(x) 2 1 0
Answer-f(x) = 2x

  • Algebra -

    2) 27 + 18 -3 = 42 agree

    12) I would say positive, burning time = k * height

    13)f(x) = 2 - (x-2) = 4-x

  • Algebra -

    2. 42 is correct!

    12. c is correct.

    13. X = 2,3,4.
    F(x) = Y = 2,1,0.

    (x,y)

    (2,2)

    (3,1)

    (4,0).

    m = (2-1) / (2-3) = 1/-1 = -1.
    m = (1-0) / (3-4) = 1/-1 = -1.
    m is the same @ all given points. So
    the function is a linear Eq.

    (2,2).
    Y = mx + b = 2,
    -1*2 + b = 2,
    -2 + b = 2,
    b = 4.

    F(x) = -x + 4.

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