7. The area of the playing surface at the Olympic Stadium in Beijing is of a hectare. What area will it occupy on a plan drawn to a scale of 1:500?

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax