The function fis shown in the table below. x f(x)
0
1
1
3
2
9
3
27
Which type of function best models the given data?
1.
exponential growth function
2.
exponential decay function
3.
linear function with positive rate of change
linear function with negative rate of change
4
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The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103