Compare and contrast expanding and simplifying
algebraic expressions with simplifying numeric
expressions. for example, compare simplifying 3(x - 2) +
(x - 1) with 3(5 – 2) + (5 – 1).

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.

If a is a nonzero real number then the reciprocal of a is

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?