Matt invests $9400 in two different accounts. The first account paid 7 %, the second account paid 10% in interest. At the end of
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The Quadratic Function has the domain as the set of all real numbers.
For the range, start from minimum value to maximum value.
But because the parabola is downward as a < 0. Thus, there are no minimum value but the maximum value instead.
Therefore the range is y <= -4