Sally and Mike are both selling books. Each of them will earn $2 per book sold plus an additional $4 if they sell more than 10 books.%0D%0A%0D%0ASally sold 11 books and Mike sold 22 books.%0D%0A%0D%0AThe money they will earn, if they sell more than 10 books, is represented by the equation , where b represents the number of books sold, and m represents the money they will earn.%0D%0A%0D%0AMike incorrectly determined that he earned twice as much as Sally. Each step of his work is shown in the table below.%0D%0A%0D%0ASteps%09Mike's Work%0D%0A1%09For Sally b = 11%0D%0A2%09For Sally m = 2(11) + 4%0D%0A3%09For Mike b = 22%0D%0A4%09For Mike m = 2(22 + 4)%0D%0AIn which step did Mike make an error?%0D%0A%0D%0A%0D%0AA. %0D%0AStep 1%0D%0A%0D%0A%0D%0AB. %0D%0AStep 2%0D%0A%0D%0A%0D%0AC. %0D%0AStep 3%0D%0A%0D%0A%0D%0AD. %0D%0AStep 4

Question

Sally and Mike are both selling books.  Each of them will earn $2 per book sold plus an additional $4 if they sell more than 10 books.%0D%0A%0D%0ASally sold 11 books and Mike sold 22 books.%0D%0A%0D%0AThe money they will earn, if they sell more than 10 books, is represented by the equation , where b represents the number of books sold, and m represents the money they will earn.%0D%0A%0D%0AMike incorrectly determined that he earned twice as much as Sally.  Each step of his work is shown in the table below.%0D%0A%0D%0ASteps%09Mike's Work%0D%0A1%09For Sally b = 11%0D%0A2%09For Sally m = 2(11) + 4%0D%0A3%09For Mike b = 22%0D%0A4%09For Mike m = 2(22 + 4)%0D%0AIn which step did Mike make an error?%0D%0A%0D%0A%0D%0AA. %0D%0AStep 1%0D%0A%0D%0A%0D%0AB. %0D%0AStep 2%0D%0A%0D%0A%0D%0AC. %0D%0AStep 3%0D%0A%0D%0A%0D%0AD. %0D%0AStep 4

Bot GPT 3.5 · Answer

The error occurred in Step 4. Mike incorrectly calculated m = 2(22 + 4). The correct equation should be m = 2(22) + 4, as the additional $4 is only earned if more than 10 books are sold.