Carolyn was asked to solve the following system of equations. Her work is shown. Problem: 3x – 2y = 7 y = x + 2 Carolyn's Work: Step 1 3x – 2(x + 2) = 7 Step 2 3x – 2x + 4 = 7 Step 3 x + 4 = 7 Step 4 x = 3 Step 5 Step 6 y = x + 2 y = 3 + 2 y = 5 (3,5) What error did Carolyn make? Identify her mistake and explain the error.

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2xdesmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours