Chapter+3

//**3.6****- Determine whether two ratios form a proportion. Solve the proptions.**//
 * //3.2- Solve equations by using addition. Solve equations by using subtraction.//**
 * Notes:** Add or Subtract on each side and find what the variable is. m + 3 = 4. 3 - 3 = 0. 4 - 3 = 1. m=1. t - 8.5 = 7.15. -8.5 + 8.5 = 0. 7.15 + 8.5 = 10.65. t = 10.65.
 * //3.3- Solve equations by using multiplication. Solve equations by using division.//**
 * Notes:** Multiply or Divide on each side and find what the variable is. -5n = 55. -5 / -5 = 1. 55 - (-5) = -11. n = -11
 * //3.4- Solve problems by working backwards. Solve equations involving more than one operation.//**
 * Notes:** 2 step equations. Start with the part that is furthest from your variable.
 * //3.5- Solve equations with variables on both sides. Solve equations with grouping symbols.//**
 * Notes:** 12 + 2y = 10y - 12. Put them in like terms and then combine them. 12 = 8y - 12. 24 = 8y. 8 * 3 = 24. y=3. You get null (**Ø**) if both sides are not equal.
 * Notes**: Cross and multiply.
 * //3.7-//**
 * Notes:** To get the percent of change you: 1. First, subtract from new from the old. 2. Then, take that number and divide it by the old. 3. Finally, you get your answer.
 * //3.8- Solve equations for a given variable. Use formulas to solve problems.//**
 * Notes: Rectangle** Area = length * width. Perimeter = length * width * 2. **Triangle** Area = length * width / 2.
 * //3.9- Solve mixture problems. Solve unifrom motion problems.//**
 * Notes:**