Use the given diagram to answer the question. Which line is the intersection of two of the planes shown?

Which line intersects one of the planes shown?

Which line has points on three of the planes shown?

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

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If f(x)=x+7 and g(x)=1/x what is (fog)(x)