Write the quadratic equation in standard form. Determine the values of a, b, and c.-7 - 4x + 9x2 = 0

A. 9x2 - 4x - 7 = 0
a = 9, b = -4, c = -7
B. 0 = -9x2 + 4x + 7
a = 9, b = -4, c = -7
C. 9x2 - 4x - 7 = 0
a = -9, b = 4, c = 7
D. 0 = -9x2 - 4x + 7
a = -9, b = 4, c = 7


Answer: A

Mathematics

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