What is the common difference for this arithmetic sequence?54,50,46,42,38,...
1 answer:
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x * x = x^2
x * -3 = -3x
5 * x = 5x
5 * -3 = -15
x^2 -3x + 5x -15
x^2 + 2x -15
This function is a quadratic function, with an upwards parabola.
