Identify the type of observational study (cross-sectional, retrospective, prospective). Researchers collect data by interviewing athletes who have won olympic gold medals from 1992 to 2008 .

A ball is thrown in the air from a ledge. Its height in feet is represented by \( 1(x)=-16\left(x^{2}-5 x-6\right) \), where \( x \) is the number of seconds since the ball has been thrown. The height of the ball is 0 feet when it hits the ground. How many seconds does it take the ball to reach the ground? A. 6 B. 5 C. 1 D. 16

A. What does the word catharsis mean? B. What does the word intuitive mean? C. What does the word dubious mean?

Parámetro \( \square^{2} \)

\( = 2 \int _ { 0 } ^ { 8 } \sqrt { t ^ { 2 } + 2 t + 2 } \)

13. \( P \propto \sqrt{y} \) and \( P=77 \) when \( y=121 \). Find the law connecting \( P \) and \( y \). Find \( P \) when \( y=144 \). Also, find \( y \) when \( P=22 \). 14. \( O \) varies inversely as \( z \). If \( Q=7 \) when \( z=15 \), find