Quadratic variation
if f(x) varies directly with x2, and f(x) = 75 when x = 5, find the value of f(4).
a.100 b.50 c.48 d.25
find the constant of variation for the quadratic variation.
6y = 9x2 a.4/9 b.2/3 c.3/2 d.
write a quadratic variation equation if g(x) varies directly with x2, and g(x) = 108 when x = 6. a. b. c. d.

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).

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

I’m still confused on how to work the percentages