Answer pls The outside temperature (in degree Celcius) is modeled as a function of time. Consider this graph of the function. Find the average rate of change in temperature, measured as degrees Celcius per hour, between 7:30 and 9:30. (there might be more than one answer)

a. 6

b. 1/3

c. 3

d. 2/6

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.

Find the solution to this system 2,1 1,-2 1,2 -1,2

Multiply sixth of sixty six by a half of ten show step by step method