Simplify by combining like terms: 3e - 19 - 7e +10

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

How do u write a function for the reflection across the y axis

From a party ,lori made a fruit punch from 1 gallon of orange juice ,2 quarts of grape juice,5 pints of pineapple juice,and 12 cups of cranbarry juice order the juice from least to greatest amount used in the fruit punch