1. Purpose: Making equations and solving word problems. Homework: p. 113 -114 1 – 29 odd.

2. Chalkboard Examples Sarah already has 45 stamps in her collection and receives 7 new stamps each month. How long before she has 129 in her collection? Let 7m = 7 stamps per month 45 + 7m = 129 starts with 45 + 7 a mo. 7m = 84 m = {12} It will take 12 months.

3. Example 2 The length of a rectangle is 3 in. more than the width. Find the length and width if the perimeter is 98 in. Draw a diagram. w + 3 Use the formula. w 2L + 2W = P 2(w+3) + 2w = 98 2w + 6 + 2w = 98 4w + 6 = 98 4w = 92 w = 23 The length is 26 in. and width is 23 in.

4. Example 3 Find 3 consecutive odd integers whose sum is 105. Write your 3 integers first. x, x + 2, x + 4 Now add them together and solve for x. x + x + 2 + x + 4 = 105 3x + 6 = 105 3x = 99 x = 33 33, 35, 37 are the integers

5. Example 4 Chandra has twice as much money as Nora. Nora has $6 less than Liam. Together they have $54. How much does each have? Set up variable expressions for each. Chandra Nora Liam 2x x x + 6 ADD. 2x + x + x + 6 = 54 4x + 6 = 54 4x = 48 x = 12 Fill in for x. C = $24, N = $12, L = $18