Which of the following equations correctly represents a circle centered at the origin with a radius of 5? a. x 2 + y 2 = 25 b. x 2 + y 2 = 5 c. (x - 5)2 + y 2 = 25 d. (x - 5)2 + (y - 5)2 = 5

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out