What is the missing value in the solution to the equation y+2=-3(x-4)

And explain how you got it so i can understand future problems : 3

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?