Find the solution for the quadratic inequality using the quadratic formula to find the roots. x^2 + x - 12 < 0 use -5, 0, 5, as test values

A. -3 < x < 4
B. -4 > x > 3
C. -4 < x < 3
D. x < -4 or x > 3
E. x < -3 or x > 4

Find the difference (8ab+a+2) - (3ab+6)

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

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