Question

Each day, Yumiko exercises by first doing sit-ups and then running. Use her data and the trend line y 9x + 5 to estimate Yumikos exercise time if she runs 5 mi. Distance (mi) 1.5 2 3.5 2.5 4 18 2 23 28 34 34 Time (min 40 Estimate: about minutes)

Answer 1

To estimate Yumiko's exercise time for running 5 miles using the trend line y = 9x + 5, substitute 5 for x to get y = 45 + 5, which equals 50 minutes.

Step-by-step explanation:

The student's question is about using a linear equation to estimate Yumiko's exercise time for running a certain distance. The trend line given is y = 9x + 5, where y represents the exercise time in minutes and x represents the distance run in miles. To estimate Yumiko's exercise time for running 5 miles, we simply plug in 5 for x in the equation:

y = 9(5) + 5 = 45 + 5 = 50

Therefore, the estimated exercise time for Yumiko to run 5 miles is 50 minutes.