The domain for f(x) and g(x) is the set of all real numbers.
let f(x) = 2x2 + x - 3 and g(x) = x + 2.
find (f•g)(x).

2x3 + 5x2 - x-6
2x3 - 5x2 + 6
x2 - 4x + 3
2x3 - x2 + 4x - 3

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).