Question 53·Medium·Problem Solving and Data Analysis

For each additional practice session, the predicted average time to solve a puzzle decreases by about 1.5 minutes.

For each additional practice session, the predicted average time to solve a puzzle increases by about 1.5 minutes.

For each additional minute of average time to solve a puzzle, the predicted number of practice sessions decreases by about 1.5.

For each additional practice session, the predicted average time to solve a puzzle decreases by about 18 minutes.