Mr toshio lent out11 rulers at the beginning of class, collected 4 rulers in the middle of class, and gave out 7 at the end of class. he had 18 at the end of the day. how many rulers did he start with. what is the first step to solving this problem?

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

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Here is my question! jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?