Larry says the 9 in 198,550 is 10 times greater than 9 in 4,931 agree or disagree how am i supposed to figure that out

Given the following statements, which is the best

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 8 = -6x a. –7.12, 1.12 b. 7.12, –1.12 c. 7.12, 1.12 d. –7.12, –1.12

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,