Fill in the blank with the correct response. Mrs. Alberts has taught seventh grade math for thirty years. Every year she calculates and records the class average on the final exam. The following dot plot represents these average scores from the past thirty years.
What percent of the scores lie within one mean absolute deviation (either way) of the mean? Round to the nearest percent and express your answer as a numerical value.
Note: Use the rounded mean and mean absolute deviation.

_%

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

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step-by-step explanation: