Which of the following represents a geometric sequence?
i 1/4,1/4,1/4,1/
ii 1/4,1/5,1/6,1/
iii 1/4,1,-4,
iv 1/4,-4,1/4,-
a. i b. ii c. iii d. iv

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Which of the following is true for the relation f(x)=2x^2+1