Carry The Two

Great video on Factoring Trinomials from MathHelp.com

Solving Systems by Substitution The substitution method involves solving one of the equations, for one of the variables and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Here is a great video on the process:

Rate Rates are used every day.  People use them at work: 40 hours a week or when they earn interest annually at a bank.  When rates are expressed as a quantity of 1, they are called united rates: Unit Rate A unit rate is a rate where the second amount is 1 unit. Example 1 30 passengers on 2 buses = x passengers per bus Divide: 30  ÷ 2 = 15 15 passengers per bus Example 2 33 kilometers in 3 hours = x kilometers per hour Divide: 33  ÷ 3 = 11 11 kilometers per hour Example 3 55 flowers in 11 vases = x flowers per vase Divide: 55  ÷ 11 = 5 5 flowers per vase