1. Formulas

2. Solving for a Variable
A formula is an equation involving two or more variables.

3. Solving for a Variable
A formula is an equation involving two or more variables.
For example the formula
A = LW

4. Solving for a Variable
A formula is an equation involving two or more variables.
For example the formula
A = LW
expresses the known relationship between the length L, width W, and the area A of a rectangle.

5. Solving for a Variable
A formula is an equation involving two or more variables.

6. Solving for a Variable
A formula is an equation involving two or more variables.
For example the formula

7. Solving for a Variable
A formula is an equation involving two or more variables.
For example the formula
expresses the relationship between the Fahrenheit and Celsius measurements.

8. Example 1
Solve the formula
P = 2L +2W for W

9. Example 1
Solve the formula
P = 2L +2W for W

10. Example 1
Solve the formula
P = 2L +2W for W

11. Example 1
Solve the formula
P = 2L +2W for W

12. Example 1
Solve the formula
P = 2L +2W for W

13. Example 1
Solve the formula
P = 2L +2W for W

14. Example 1
Solve the formula
P = 2L +2W for W

15. Example 2
Solve the formula

16. Example 2
Solve the formula

17. Example 2
Solve the formula

18. Example 2
Solve the formula

19. Example 2
Solve the formula

20. Example 2
Solve the formula

21. Example 2
Solve the formula

22. Example 2
Solve the formula

23. Example 2
Solve the formula

24. Example 3
Solve the formula

25. Example 3
Solve the formula

26. Example 3
Solve the formula

27. Example 3
Solve the formula

28. Example 3
Solve the formula

29. Example 3
Solve the formula

30. Example 3
Solve the formula

31. Example 3
Solve the formula

32. Example 3
Solve the formula

33. Example 4
Janet Branson found that usually it took her 3/4 hours each day to drive a distance of 15 miles to work. What was her speed?

34. Example 4
Janet Branson found that usually it took her 3/4 hours each day to drive a distance of 15 miles to work. What was her speed? d = rt

35. Example 4
Janet Branson found that usually it took her 3/4 hours each day to drive a distance of 15 miles to work. What was her speed? d = rt

36. Example 4
Janet Branson found that usually it took her 3/4 hours each day to drive a distance of 15 miles to work. What was her speed? d = rt

37. Example 4
Janet Branson found that usually it took her 3/4 hours each day to drive a distance of 15 miles to work. What was her speed? d = rt

38. Example 4

39. Example 4

40. Example 4

41. Example 4

42. Example 4

43. Example 4

44. Example 4

45. A class consists of 50 students. 32 are males.
Example 5
A class consists of 50 students are males.

46. Example 5
A class consists of 50 students are males. Find the percent of males in the class.

47. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

48. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

49. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

50. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

51. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

52. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

53. Example 5
A class consists of 50 students are males. Find the percent of males in the class is what percent of 50

54. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture?

55. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

56. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

57. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

58. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

59. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

60. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

61. Example 6
A 50-L mixture of acid and water contains 10L of acid. What is the percent of acid in the mixture? 10 is what percent of 50

62. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned?

63. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned? What is 8% of 3550?

64. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned? What is 8% of 3550?

65. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned? What is 8% of 3550?

66. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned? What is 8% of 3550?

67. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned? What is 8% of 3550?

68. Example 7
If a savings account balance of $3550 earns 8% interest in one year, how much interest is earned? What is 8% of 3550?

69. L 1.2 # 1 – 36
Every Other Odd Problem
1, 5, 9, 13, 17, 21, 25, 29, 33