In ∆PQR, if Angle p-q= 42° and angle q-r=21°, find angle p, q and r
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Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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?

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb