13. Determine the values of a, b, and c for each quadratic equation.
a. y = 8x2 + 7х - 3
b. y = 8x2 + 7х - 3
c. y = 8x2 + 7x - 3
For all three quadratic equations, the values of a, b, and c are as follows:
a. a = 8, b = 7, c = -3
b. a = 8, b = 7, c = -3
c. a = 8, b = 7, c = -3