If you bought a hamburger for $2.30 and paid for it with a 5 dollar bill, how much change would you receive?

At a lunchron, guests are offered a selection of five different grilled vegetables and four different meats. in how many waya could one choose three vegetables and two meats?

In the image, point a marks the center of the circle. which two lengths must form a ratio of 1 : 2? (options are in the images since thought they were harmful phrases)

52 cm radius = diameter = area = circumference = circumfer