Book Maths Puzzle Algebra

Using the quadratic formula to solve for x in the equation 2x(square)=11x-9 results in which of the following values.

A. -9/2 or 1
B. 9/2 or -1
C. 9/2 or 1
D. -9/2 or -1

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Book Other Question

Train A leaves a station traveling at 80 km/h. Two hours later, train B leaves the same station traveling in the same direction at 100 km/h. How long does it take train B to catch I am a father who has not used algebra since 1972!! My daughter ia having an issue with, How to solve an equation using fractions. ie: "1/3x+2=6" I am stumped. can you break it down for us.

Thanx.

Glenn