Colin weighs himself at 60kg to the nearest kg.
What is the least he could weigh?

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 expression gives the exact value of x?

Hdtv screens usually have a width-to -height ratio of 16: 9. which screen dimensions are in the same proportion?