Two similar circles are shown. The circumference of the larger circle, with radius OB, is 3 times the
circumference of the smaller circle, with radius OA.
Radius OB measures x units. Which expression
represents the circumference of the smaller circle with
radius OA?

A.(pi/3) x units
B.(2pi/3) x units
C.2pi x units
D.6pi x units

Classify each polynomial by its degree and by its number of terms.

What is the solution to the equation 9^(x+1) =27

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.