4. The polynomial m is a function ofx. The graph of m has two zeros at -7 and 2. Which expression below could be a possible expression of m?
a. (x + 7)(x - 2)
b. (x-7)(x+2)
c. - (x – 7)(x+2)
dr2 - 7x + 2
what’s the answer?

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).