Algebra 2
posted by Sunny .
A blue print of a shopping complex shows that the bottom edge of the roof to be 93 feet above the ground. If the roof rises to a point 171 feet above the ground over a horizontal distance of 6.5 yards, what is the slope of the roof?
I am positive the answer is twelve, but the book is telling me the answer is 4! Who is right, and if the book is, what did I do wrong?

Algebra 2 
MathMate
Mistakes are found in answers in books, but unfortunately not this time.
Watch out: "over a horizontal distance of 6.5 yards,"
Can you take it from here?
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