2 Select the correct answer from each drop-down menu.
Simplify the following polynomial expression.
(3x2 - x - 7) – (5.x2 - 4x - 2) + (x + 3)(x + 2)
The polynomial simplifies to an ___expression that is a
with a degree of

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 area of the region between a regular hexagon with sides of 6" and its inscribed circle.

Write each rational number in the form a/b, where a and b are integers. 1. 5 1/6 2. -12