Evaluate the following, using the distributive property. (i) – 39 × 99 (ii) (– 85) × 43 + 43 × ( – 15)

(iii) 53 × ( – 9) – ( – 109) × 53

(iv) 68 × (–17) + ( –68) × 3

(v) 26 x (-48) + (-48) x 36

(vi) (-41) x 102

(vii)(-57) x (-19) + 57

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.