In a hand of cards, the ratio of black cards to red cards was 5 to 3. If the hand contained 15 black cards, which of the following proportions could be solved to find the number of red cards, r? (1) 15 5 3 r  (3) 3 15 8 r  (2) 5 15 3 r  (4) 15 5 8 r 

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a.m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?