What are the roots of the equation
72+27-8= -2x + 4

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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?

What is the volume of a cone with a height of 6 cm in the radius of 2 cm