Did i get 1,2,3,4 right? don't mind the stain on the paper i got paint on it

If i have 20$ and i gave 5$ away how much i got

How many grams the dog will eat in 3 days?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212