Which expressions represent i less than the product of 3 and 4? Check all that are true.
(O (3 4) - 1
C) 3 4 - 1
0 0 3x (4 - 1)
0 0 1 - (3 x 4)
- 0 1 - 3 x 4

Mine like pick multiple

Ill mark the brainliest if you me with the these three questions 7,8,9

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.

3x = 729 solve for x plz . it's urgent. will mark