1. Pages 145 - 146

2. Amy earned a grade of 83 and 94 on her two math tests. What must she earn on her third test to get A average Average = 90 # of tests = 3 Test Grades =83, 94 We know that Given Solution Amy will have to earn 93 on her next test Example 1: Let missing test be x 270 = 177 + x x = 93

3. Sum of three consecutive numbers is 129. Find the numbers Sum of consecutive numbers = 129 We know that Given Solution 3x + 3 = 129 The numbers are 42, 43, 44 Example 2: x+ (x+1) + (x+2) = 129 3x = 126 x = 42

5. Sum of three consecutive numbers is 129. Find the numbers Sum of consecutive numbers = 129 We know that Given Solution 3x + 3 = 129 The numbers are 42, 43, 44 Example 3: x+ (x+1) + (x+2) = 129 3x = 126 x = 42