Scores on a test are normally distributed with a mean of 80 and a standard deviation of 5 700 students took the test. How many students scored higher than the mean?

Lassify the function as linear or quadratic and identify the quadratic, linear, and constant terms. f(x) = (3x + 2)(−6x − 3) linear function; linear term: −21x; constant term: −6 linear function; linear term: −18x2; constant term: −6 quadratic function; quadratic term: 6x2; linear term: 24x; constant term: −6 quadratic function; quadratic term: −18x2; linear term: −21x; constant term: −6

Measures of the angle of r, 31 s (x+4) t (3x+9)

Which rotation about its center will carry a regular hexagon onto itself