An airline company creates a scatter plot showing the relationship between the number of flights an airport offers and the average distance in miles
travelers must drive to reach the airport. the correlation coefficient of the line
best fit is -0.52.
a. are they correlated? explain your reasoning.
b. do either of the variables cause the other to change? explain your reason
n unit 3. lesson 9)

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.