2(x + 2)2 - 18 = 0 is the equation resulting from setting a quadratic function f(x) equal to 0 and completing the square Which of the following statements about f(x) is true? (1 point)
Of(x) has its vertex at (2, -18)
Of(0) has a graph that opens downward.
Of(2) has an axis of symmetry at I =
-18
Of(z) has an axis of symmetry at =
2.

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 triangles are similar. what is the value of x? show your work.

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.