Leah lunch account has a starting balance of $20 .the table shows the remaining balance after a certain number of days. if leah is bringing her lunch to school but buying a sports drink from the cafeteria each day, how much does the sports drink cost?

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For how answer my question this will be the last question can you answer in math subject

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

What’s -11-33k and factor each expression completely